Veterans of Mitt Romney’s 2012 presidential campaign are eyeing an alliance with Joseph R. Biden, looking to make a splash in announcing they have turned their backs on the GOP this year and will support the presumptive Democratic nominee instead. Micah Spangler, who was a staffer in southern Florida for the Republican Party during the race, told fellow campaign vets in emails Friday and over the weekend that he is working with the Biden team “to cultivate a network of Romney alums that want to help elect Joe in November.” In a separate email to The Washington Times, he said...