Summary: A great day for the frontrunners on Tuesday — a clean sweep of the five primaries at stake by Donald Trump, while Hillary Clinton took four of five. But despite his impressive success, Trump is still sending out warning signals that the Republican Party elite are trying to change the rules and steal the nomination away from him. Tom Rath, a longtime GOP operative from New Hampshire and a veteran of Rules Committee skirmishes, talks about the process.<br> It has been suggested that this is the time the candidates should be starting to think about who they want on their ticket. Joel Goldstein, an authority on the vice presidency and author of a new book on the subject, describes the vetting process and how the office of the VP has changed over the years.<br> And our “this week in political history” feature goes back to 2009 when veteran GOP Senator Arlen Specter switched to the Democratic Party. Chris Nicholas, a key Republican strategist from Pennsylvania who was close with Specter, talks about the thought processes that went into the senator’s decision.<br> <a href="http://www.vanityfair.com/news/2016/04/ted-cruz-carly-fiorina-vp">Photo via Gerardo Mora/Getty Images</a><br> <a href="http://media.blubrry.com/politicaljunkie/content.blubrry.com/politicaljunkie/Podcast_rough_4-27-16_mixdown.mp3"></a><a href="http://krpoliticaljunkie.com/subscribe/"></a><br> <a href="http://creativecommons.org/licenses/by-nc-sa/4.0/" rel="license"></a><br> This work is licensed under a <a href="http://creativecommons.org/licenses/by-nc-sa/4.0/" rel="license">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a><br>
