Introduction / Marion Just and Christina Holtz-Bacha -- Did Twitter kill the boys on the bus? : a report from the Romney campaign in 2012 / Peter Hamby -- Tweeting to the press? : political Twitter activity on offline media in the 2013 German election campaign / Christina Holtz-Bacha and Reimar Zeh -- U.S. political journalists' use of Twitter : lessons from 2012 and a look ahead / Logan Molyneux, Rachel R. Mourao, and Mark Coddington -- Media coverage of an election campaign on Twitter : the case of Belgium in the EU elections / Evelien D'heer and Pieter Verdegem -- Communication with constituents in 140 Characters : how members of Congress used Twitter to get out the vote in 2014 / Heather K. Evans -- South Korean citizens' political information sharing on Twitter during the 2012 general election / Jisue Lee, Hohyon Ryu, Lorri Mon, and Sung Jae Park -- Message repetition in social media : presidential candidate Twitter feeds in the 2012 U.S. general election / Kate Kenski and Bethany A. Conway -- Campaigning on Twitter : the use of social media in the 2014 European elections in Italy / Sara Bentivegna and Rita Marchetti -- Candidate use of Twitter and the intersection of gender, party, and position in the race : a comparison of competitive male/female Senate races in 2012 and 2014 / Marion R. Just, Ann N. Crigler, and Rose A. Owen -- Who gets to say #are you better off? : promoted trends and bashtagging in the 2012 U.S. Presidential election / Joel Penney -- Parties, leaders, and online personalization : Twitter in Canadian electoral politics / Tamara A. Small -- Social media coming of age : developing patterns of Congressional Twitter use, 2007-2014 / David S. Lassen and Leticia Bode -- From a tweet to a seat : Twitter, media visibility, and electoral support / Reimar Zeh -- Conclusion / Richard Davis.