We discuss the Marco Rubio-Ted Cruz and Jeb Bush-Donald Trump showdowns at the GOP presidential debate in Las Vegas, Hillary Clinton's potential down-ballot effect, and the best and worst campaigns of the year.
Zach C. Cohen contributed to this article
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Adam Wollner is an analyst for National Journal Hotline. Previously, he covered politics as an intern for NPR and the Center for Public Integrity. A native Wisconsinite, Wollner graduated from the University of Wisconsin-Madison in 2013 with a bachelor degree in journalism and political science.