COLUMBIA, SC — Four of U.S. Sen. Lindsey Graham's announced challengers in June's Republican primary pledged support for each other Thursday if any of them end up in a runoff with the Seneca incumbent. But a news conference announcing their alliance on the State House steps took an unexpected turn when the most minor of the candidates, Dave Feliciano of Spartanburg, took the podium and called Graham "ambiguously gay." Feliciano said, "It's about time that South Carolina (says) hey, We're tired of the ambiguously gay senator from South Carolina. We're ready for a new leader to merge the Republican Party....