Former Alabama Democratic Rep. Artur Davis has turned in his Democratic Party card as he prepares to register for the GOP in Virginia. The switch was rumored for some time following his departure from Democratic politics in 2010. Davis left political circles after his unsuccessful run for governor in Alabama. He lost in the 2010 primaries, and generating hostility from some fellow Democrats who disliked his effort to avoid identity politics. The winning Democrat was trounced by the Republican candidate in the general election. “If I were to run [for office], it would be as a Republican … [because] wearing...