WASHINGTON – Democrats had a disappointing night in the battle for Senate control, but it was too soon for Republicans to take a victory lap Wednesday, although they brushed back multiple challengers to protect their now teetering majority.Key races in North Carolina, Maine and Michigan remained undecided, and at least one in Georgia was headed to a January runoff.Senate Majority Leader Mitch McConnell said President Donald Trump's campaign helped his GOP allies, but it's still to soon to declare victory as state election officials count ballots.“We're waiting — whether I'm going to be the majority leader or not,” McConnell said at a press conference in his home state of Kentucky.In a delicate pushback against Trump's own premature claims.