Republicans in the U.S. Congress are petrified about a November debacle, a fear stoked on May 3, when they lost their second straight special election in a district held by Republicans. The party's fundamental situation is terrible: Republicans are saddled with an enormously unpopular president, a war, a troubled economy and a Democratic opposition that's being energized by important constituent groups. "The generics are as bad as anytime since I have been here," said Representative Tom Davis, a Virginia Republican and one of the most politically astute members of Congress in either party. Davis, a 14-year veteran, is retiring this...