The NYTimes reports that challengers for the South Carolina Republican are lining up on the right:

Conservatives in South Carolina are eager to oust Mr. Graham, who has enraged the far right for, among other things, reaching across the aisle on immigration and supporting President Obama’s nominations for the Supreme Court. Tea Party supporters called him a community organizer for the Muslim Brotherhood when, instead of heading home for the Congressional break this month, he went to Egypt at the request of the president.

But to stand a chance against the politician who succeeded Strom Thurmond in 2003, conservatives will have to win a civil war of their own. At least 40 groups align themselves along Tea Party and Libertarian lines, and trying to unify them to topple the state’s senior senator will be no easy task.

So far, three people have stepped forward to challenge Mr. Graham in the June primary: State Senator Lee Bright; Richard Cash, a former Congressional candidate; and Nancy Mace, the first woman to graduate from the Citadel and, at the moment, the challenger whose political star is rising the fastest.

Click here for more about each of these primary contenders.