SOUNDING THE ALARMIf they had them, alarm bells would be going off right now in the offices of the Congressional Black Caucus. This, after the stunning defeat on Tuesday of five-term Rep. Earl Hilliard, who after his 7th District in Alabama was redrawn found himself challenged in the Democratic primary by moderate Artur Davis. The Alabama 7th was a heated race. Both men are African-American and had bases in the black community. But Davis was able to raise money in the white community, as well, particularly among Jewish voters. It was this Jewish support for Davis that made some of...