Marco Rubio Won't Back Down to Jeb Bush

The Republican senator thinks he's got a different policy platform and distinct donor network.

WASHINGTON, DC - MAY 13: U.S. Sen. Marco Rubio (R-FL) speaks during a National Press Club Newsmaker Luncheon May 13, 2014 in Washington, DC. Sen. Rubio delivered a policy speech on social security and answered questions during the luncheon. 
National Journal
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