E. Anduiza, A. Gallego, and M. Cantijoch, Online Political Participation in Spain: The Impact of Traditional and Internet Resources, Journal of Information Technology & Politics, vol.7, issue.4, pp.356-368, 2010.
DOI : 10.1080/19331681003791891

N. Anstead and A. Chadwick, The 2008 Digital Campaign in the United States: The Real Lessons for British Parties, Renewal: Journal of Labour Politics, vol.16, pp.86-98, 2008.

E. Belanger, B. Cautrès, M. Foucault, M. Lewis-beck, and R. Nadeau, Le vote des Français de Mitterrand à Sarkozy, 2012.

S. Bentivegna, Rethinking Politics in the World of ICTs, European Journal of Communication, vol.21, issue.3, pp.331-343, 2006.
DOI : 10.1177/0267323106066638

S. Best and B. Krueger, Analyzing the representativeness of internet political participation, Political Behavior, vol.12, issue.09, 2005.
DOI : 10.1007/s11109-005-3242-y

B. Bimber, The Internet and Citizen Communication With Government: Does the Medium Matter?, Political Communication, vol.55, issue.4, 1999.
DOI : 10.2307/1956122

B. Bimber, Information and Political Engagement in America: The Search for Effects of Information Technology at the Individual Level, Political Research Quarterly, vol.40, issue.1, pp.53-67, 2001.
DOI : 10.1177/106591290105400103

B. Bimber, Digital Media in the Obama Presidential Campaigns: Comparing, 2008.

B. Bimber and L. Copeland, Digital Media and Traditional Political Participation Over Time in the U.S., Journal of Information Technology & Politics, vol.10, issue.2, pp.125-137, 2013.
DOI : 10.1111/j.1460-2466.2007.00364.x

R. Bond, C. Fariss, J. Jones, A. Kramer, C. Marlow et al., A 61-million-person experiment in social influence and political mobilization, Nature, vol.1, issue.7415, 2012.
DOI : 10.1089/cyber.2009.0226

S. Boulianne, Does Internet Use Affect Engagement? A Meta-Analysis of Research, Political Communication, vol.56, issue.2, pp.193-211, 2009.
DOI : doi: 10.1111/j.1460???2466.2007.00364.x

F. Bousquet, Le net-campagne de 2007: entre mobilisation et participation, La communication politique de la présidentielle de 2007. L'Harmattan, 2009.

P. Bréchon, Comportements et attitudes politiques, 2006.

S. Briggs and J. Cheek, The role of factor analysis in the development and evaluation of personality scales, Journal of Personality, vol.17, issue.1, pp.106-143, 1986.
DOI : 10.1037//0022-3514.38.3.432

A. Campbell, P. Converse, W. Miller, and D. Stokes, The American Voter Old Wine in The New Bottle? The 1999 Finish Election Campaign on the Internet, Press/Politics, vol.6, issue.1, pp.68-87, 1960.

T. Carlson and K. Strandberg, Plus ça change, plus c'est la même chose? The evolution of Finnish web campaigning, Communicating Politics: Political Communication in the Nordic Countries, pp.161-179, 1996.

A. Ceron, L. Curini, S. Iacus, and G. Porro, Every tweet counts? How sentiment analysis of social media can improve our knowledge of citizens??? political preferences with an application to Italy and France, New Media & Society, vol.134, issue.1, 2013.
DOI : 10.1177/14614440222226244

. France, New Media & Society

A. Chadwick, Recent Shifts in Relationship between the Internet and Democratic Engagement in Britain and United States Granularity, Information Exuberance, and Political Learning, 2012.

J. Chiche and F. Haegel, Les connaissances politiques La démocratie à l'épreuve. Une nouvelle conception de l'opinion des français, Paris: Presses de Sciences-Po, pp.273-292, 2002.

S. Coleman and J. Gøtze, Bowling Together: Online Public Engagement in Policy Deliberation, 2001.

C. Colombo, C. Galais, and A. Gallego, Internet Use and Political Attitudes in Europe, 2012.
DOI : 10.1017/CBO9781139108881.006

M. Conway and D. Donard, An Evaluation of New Zealand Political Party Websites, 2004.

J. Druckman, M. Kifer, and M. Parkin, Timeless strategy meets new medium: Going negative on congressional campaign web sites, Political Communication, vol.21, issue.1, pp.88-103, 2002.

F. Esser and C. De-vreese, Comparing Young Voters' Political Engagement in the United States and Europe, American Behavioral Scientist, vol.50, issue.9, p.50, 2007.
DOI : 10.1177/0002764207299364

R. Farmer and R. Fender, E-Parties: Democratic and Republican State Parties in 2000, Party Politics, vol.11, issue.1, pp.47-58, 2000.
DOI : 10.1177/1354068805048472

K. Foot and S. Schneider, Web Campaigning, 2006.
DOI : 10.4135/9781412953993.n707

K. Foot, S. Schneider, R. Kluver, M. Xenos, and N. Jankowski, Comparing web production practices across electoral web spheres, 2007.

R. Gibson and M. Cantijoch, Conceptualizing and measuring participation in the age of the internet: Is online political engagement really different to offline?. Paper presented at the Colloquium, Methodological Challenges in Participation Research, pp.4-5, 2011.

R. Gibson and I. Mcallister, Normalizing or Equalizing Party Competition? Assessing the impact of the web on election campaigning, Political Studies, 2014.

R. Gibson and S. Ward, U.K. Political Parties and the Internet Politics as Usual " in the New Media? Press, Politics, vol.3, issue.3, pp.14-38, 1998.
URL : https://hal.archives-ouvertes.fr/hal-00836645

R. Gibson and S. Ward, A Proposed Methodology for Measuring the Function and Effectiveness of Political Web-Sites, Social Science Computer Review, vol.18, 2000.

R. Gibson, M. Cantijoch, and S. Ward, Another False Dawn? New Media and Citizen Participation in the 2010 UK General Election. Paper presented at the Elections Public Opinion and Parties Conference, 2010.

R. Gibson, M. Margolis, D. Resnick, and S. Ward, Election Campaigning on the WWW in the USA and UK: A Comparative Analysis, Party Politics, vol.9, issue.1, pp.47-75, 2003.
DOI : 10.1177/135406880391004

F. Greffet, New technique, new mobilizations? French parties in web 2.0 era, 2013.

V. Gueorguieva, Voters, MySpace, and YouTube: The Impact of Alternative Communication Channels on the 2006 Election Cycle and Beyond, Social Science Computer Review, vol.26, issue.3, 2007.
DOI : 10.1177/0894439307305636

A. Hamilton and C. Tolbert, Political Engagement and the Internet in the 2008 U.S. Presidential Elections, Digital Media and Political Engagement Worldwide. A Comparative Study, 2012.
DOI : 10.1017/CBO9781139108881.004

B. Hardy and D. Scheufele, Examining Differential Gains From Internet Use: Comparing the Moderating Role of Talk and Online Interactions, Journal of Communication, vol.8, issue.4, pp.71-84, 2005.
DOI : 10.1080/105846099198659

M. Hindman, The Myth of Digital Democracy, 2009.

L. Hoffman, Participation or Communication? An Explication of Political Activity in the Impact of the Web on Election Campaigning, Journal of Information Technology and Politics, vol.9, issue.3, 2012.

L. Jorba and B. Bimber, The Impact of Digital Media on Citizenship from a Global Perspective, Digital Media and Political Engagement Worldwide. A Comparative Study, 2012.
DOI : 10.1017/CBO9781139108881.002

O. Kalnes, Norwegian Parties and Web 2.0, Journal of Information Technology & Politics, vol.6, issue.3-4, 2009.
DOI : 10.1080/19331680903041845

K. Kenski and N. Stroud, Connections Between Internet Use and Political Efficacy, Knowledge, and Participation, Journal of Broadcasting & Electronic Media, vol.11, issue.3, pp.173-192, 2006.
DOI : 10.2307/2655535

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

R. Kluver, N. Jankowski, K. Foot, and S. Schneider, The Internet and national elections. A comparative study of web campaigning, 2007.

K. Koc-michalska and D. Lilleker, MEPs online: Understanding communication strategies for remote representatives, Politics and the Internet in Comparative Context: Views from the cloud, 2013.
URL : https://hal.archives-ouvertes.fr/hal-00920276

K. Koc-michalska and D. Lilleker, Interagir avec les candidates: les stratégies interactives lors de l'élection présidentielle française de 2012, Présidentielle 2012, une communication politique bien singulière, pp.149-165, 2014.

K. Koc-michalska and T. Vedel, Les pratiques informationnelles durant la campagne presidentielle Le vote normal. Les élections présidentielle et législatives d'avril-juin 2012, 2013.

M. Kroh and H. Neiss, On the Causal Nature of the Relationship between Internet Access and Political Engagement, 2012.
DOI : 10.1017/CBO9781139108881.009

D. Lilleker and N. Jackson, Elections 2.0: Comparing E-Campaigns in France, Germany, Great Britain and the United States, Analysen zur Bundestagswahl, pp.96-116, 2009.
DOI : 10.1007/978-3-531-92853-1_3

D. Lilleker and K. Koc-michalska, Online Political Communication Strategies: MEPs, E-Representation, and Self-Representation, Journal of Information Technology & Politics, vol.2010, issue.3, 2013.
DOI : 10.1111/j.1467-8500.2007.00529.x

URL : https://hal.archives-ouvertes.fr/hal-00920217

D. Lilleker and K. Koc-michalska, Online delivery and demand in France 2012 presidential election, Politics and Policy in the Information Age. IGI (forthcoming), 2014.

D. Lilleker, K. Koc-michalska, E. Schweitzer, M. Jacunski, J. Nigel et al., Informing, Engaging, Mobilising or Interacting: searching for a European model of web campaigning, European Journal of Communication, vol.26, 2011.

M. Margolis and D. Resnick, Politics as usual: The cyberspace " revolution, 2000.

M. Margolis, D. Resnik, . Ch, and . Tu, Campaiging on the Internet. Parties and Candidates on the World Wide Web in the 1996 Primary Season, Press/Politics, vol.2, issue.1, pp.59-78, 1997.

N. Mayer, Sociologie des comportements politiques, 2010.
DOI : 10.3917/arco.maye.2010.01

E. Morozov, The Net Delusion: The Dark Side of Internet Freedom, 2013.

T. Nam and J. Stromer-galley, The Democratic Divide in the, 2008.

N. Nie, J. Junn, and K. Stehlik-barry, Education and Democraticship in America, 1996.

P. Norris, Preaching to the Converted?: Pluralism, Participation and Party Websites, Party Politics, vol.9, issue.1, pp.21-45, 2003.
DOI : 10.1177/135406880391003

P. Norris and J. Curtice, Getting the Message Out: A Two-Step Model of the Role of the Internet in Campaign Communication Flows During the 2005 British General Election, Journal of Information Technology & Politics, vol.4, issue.4, pp.3-13, 2008.
DOI : 10.1080/19331680801975359

M. Prior, News vs. Entertainment: How Increasing Media Choice Widens Gaps in Political Knowledge and Turnout, American Journal of Political Science, vol.38, issue.4, pp.577-592, 2005.
DOI : 10.1086/268864

D. Resnick, Politics on the internet: The normalization of cyberspace The Politics of Cyberspace, pp.48-68, 1998.

H. Rojas, D. Shah, J. Cho, M. Schmierbach, H. Keum et al., Media Dialogue: Perceiving and Addressing Community Problems, Mass Communication and Society, vol.8, issue.2, 2005.
DOI : 10.1207/s15327825mcs0802_2

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

J. Saglie and S. Vabo, Size and e-Democracy: Online Participation in Norwegian Local Politics, Scandinavian Political Studies, vol.30, issue.2, 2009.
DOI : 10.1111/j.1467-9477.2009.00235.x

D. Scheufele and M. Nisbet, Being a citizen online -New opportunities and dead ends, pp.55-62, 2002.

E. Schweitzer, Election Campaigning Online, European Journal of Communication, vol.80, issue.3, pp.327-51, 2005.
DOI : 10.1177/0267323105055261

E. Schweitzer, Innovation or Normalization in E-Campaigning?: A Longitudinal Content and Structural Analysis of German Party Websites in the, National Elections. European Journal of Communication, vol.23, 2002.

E. Schweitzer, Normalization 2.0: A longitudinal analysis of German online campaigns in 9 -the national elections, European Journal of Communication, vol.26, 2002.

A. Smith, Civic Engagement in the Digital Age. Pew Internet & American Life Project, Civic-Engagement.aspx, 2013.

A. Smith, K. Schlozman, S. Verba, and H. Brady, The Internet and Civic Engagement, 2009.

K. Strandberg, A Social Media Revolution or Juts a Case of History Repeating Itself? ? The Use of Social Media in the 2011 Finnish Parliamentary Elections, 2014.

L. M. Tkach-kawasaki, Clicking for votes: assessing Japanese political campaigns on the web, Asia.com: Asia encounters the Internet, pp.159-174, 2003.

C. Tolbert and R. Mcneal, Unraveling the effects of the internet on political participation, 2003.

A. Tumasjan, T. Sprenger, P. Sandner, and I. Welpe, Predicting Elections with Twitter, p.140, 2010.

C. Vaccari, Surfing to the ??lys??e: The Internet in the 2007 French Elections, French Politics, vol.59, issue.2, pp.1-22, 2008.
DOI : 10.1093/pa/gsl014

C. Vaccari, Digital Politics in Western Democracies: A Comparative Study, 2013.

F. Vassallo, France, Social Capital and Political Activism, 2010.
DOI : 10.1057/9780230277908

T. Vedel and Y. Cann, Internet. Une communication électorale de rupture, 2008.
URL : https://hal.archives-ouvertes.fr/hal-01475868

S. Verba, K. Schlozman, and H. Brady, Voice and equality: Civic voluntarism in American politics, 1995.

M. Vergeer, L. Hermans, and C. Cunha, Web campaigning in the 2009 European Parliament elections: A cross-national comparative analysis, New Media & Society, vol.9, issue.4, pp.128-148, 2013.
DOI : 10.1177/1354068811407580

M. Vergeer, L. Hermans, and S. Sams, Online social networks and micro-blogging in political campaigning, Party Politics, vol.6, issue.2, 2013.
DOI : 10.1017/CBO9780511609343

S. Wang, Political Use of the Internet, Political Attitudes and Political Participation, Asian Journal of Communication, vol.3, issue.4, 2007.
DOI : 10.1080/10510970600666974

S. Ward and R. Gibson, On-line and on message? Candidate websites in the 2001 General Election1, The British Journal of Politics and International Relations, vol.30, issue.3, pp.188-205, 2003.
DOI : 10.1177/1354068803009001719

R. Wolfinger and S. Rosenstone, Who Votes?, 1980.

J. M. Wooldridge and K. Foot, Econometric analysis of cross section and panel data Politics as Usual or Politics Unusual? Position Taking and Dialogue on Campaign Websites in the 2002 Elections, Journal of Communication, vol.55, issue.1, pp.169-185, 2001.

F. Online, Historical Users .214** (.096)134* (.069) .284* (.147), pp.245-142