State Rep. Phillip Ensler, a Democrat, faces former Republican Party Chairman John Wahl in a race to become the state’s next lieutenant governor.By Lee HedgepethHUNTSVILLE, Ala.—Candidates for Alabama’s second-highest office took the stage Wednesday for what was the first major-party debate for a statewide office since 2010, the year Republicans took the reins of government from Democrats for the first time in the modern era.