Arkansas. Lt. Gov. Win Rockefeller, who may represent Republicans’ second-best chance of defeating Democratic Sen. Blanche Lincoln next year, still cannot make up his mind about whether to launch a Senate bid. Gov. Mike Huckabee, who had been touted by Republicans as their lead candidate to challenge Lincoln until he bowed out last month, recently threw his support behind Rockefeller. But Rockefeller has yet to say what his plans are. “The lieutenant governor is honored by the governor’s positive comments toward his candidacy,” Win’s chief of staff, Doyle Webb, said late last week. “His focus is certainly toward public service,...