Republican Incumbents Flex Their Political Muscles

The Wall Street Journal
May 23, 2014 AT 12:01 PM
To date, not a single Republican or Democratic incumbent has been defeated in the primaries. WSJ's Reid J. Epstein explores what this means for the GOP establishment and the tea party -- and for specific fall races like the Mitch McConnell-Alison Lundergan Grimes showdown in Kentucky.