U.S. Rep. Stephen Lynch, the lone member of the Bay State delegation to vote against Obamacare four years ago, now predicts the law’s botched roll-out will not only cost Democrats valuable House seats but could even jeopardize their control of the Senate in this year’s hotly contested midterm elections. “We will lose seats in the House,” the plain-talking South Boston Democrat said in Boston Herald Radio’s studio yesterday, delivering a harsh diagnosis. “I am fairly certain of that based on the poll numbers that are coming out from the more experienced pollsters down there. And I think we may lose...