A new political action committee is hoping to convince former Speaker of the House and presidential candidate Newt Gingrich to run for the U.S. Senate in Virginia next year. Draft Newt PAC insists Gingrich, now a host of CNN’s Crossfire, is Republicans’ best hope for retaking the Senate seat currently held by Sen. Mark Warner (D., Va.), who is vying for his second term. “We want a credible challenger to Mark Warner, and no one could do what Newt could do to fight—and win,” said Andrew Hemingway, a former staffer on Gingrich’s 2012 presidential campaign who is leading the Draft...