Thom Tillis (C) talks with Mark Harris, (R) before a debate between the four top-polling Republican candidates in North Carolina for the U.S. Senate, at Davidson College in Davidson, North Carolina ... more 
Thom Tillis (C) talks with Mark Harris, (R) before a debate between the four top-polling Republican candidates in North Carolina for the U.S. Senate, at Davidson College in Davidson, North Carolina April 22, 2014. Also shown is candidate Greg Brannon (L). Picture taken April 22, 2014. To match USA-NORTHCAROLINA-SENATE REUTERS/Davis Turner (UNITED STATES - Tags: POLITICS ELECTIONS) less 
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Reuters | Photo By DAVIS TURNER / REUTERS
Fri, Apr 25, 2014 12:24 PM EDT