FILE - In this Nov. 1, 2010 file photo, U.S. Rep. John Boehner, left, U.S. Senate candidate Rob Portman, center, and Ohio gubernatorial candidate John Kasich come together at the end of a rally in Cincinnati. Conservatives within their own party pose challenges to the three Republican stars in the political battleground state of Ohio. Gov. Kasich has riled conservatives by embracing Medicaid expansion and some tax proposals, while House Speaker Boehner is clashing with conservative groups over the federal budget. Sen. Portman faces backlash from social conservatives over his about-face in favor of gay marriage. (AP Photo/Al Behrman, File)