1. Hillary Clinton on Twitter: "I'm running for president. Everyday Americans need a champion and I want to be that champion. --H https://t.co/w8Hoe1pbtC". https://twitter.com/hillaryclinton/status/587336319321407488 April 2015. Hillary Clinton on Twitter: "I'm running for president. Everyday Americans need a champion and I want to be that champion. --H https://t.co/w8Hoe1pbtC". https://twitter.com/hillaryclinton/status/587336319321407488 April 2015.
2. Ted Cruz on Twitter: "I'm running for President and I hope to earn your support! http://t.co/0UTqaIoytP". https://twitter.com/tedcruz/status/579857596191899648 March 2015. Ted Cruz on Twitter: "I'm running for President and I hope to earn your support! http://t.co/0UTqaIoytP". https://twitter.com/tedcruz/status/579857596191899648 March 2015.
3. US presidential candidate announcements: A history of hat throwing. The Economist. http://www.economist.com/blogs/graphicdetail/2015/06/us-presidential-candidate-announcements March 2015. US presidential candidate announcements: A history of hat throwing. The Economist. http://www.economist.com/blogs/graphicdetail/2015/06/us-presidential-candidate-announcements March 2015.
4. FOREIGN POLICY AND THE ELECTORAL CONNECTION