Three undecided House races will determine size of GOP’s narrow majority

Mark Begich’s flip of Alaska’s lone House seat will pad Republicans’ slim House majority — but with several members departing to join President-elect Donald Trump’s administration and just three races left to be decided, the party could enter the new year with very little room for error.

​ Mark Begich’s flip of Alaska’s lone House seat will pad Republicans’ slim House majority — but with several members departing to join President-elect Donald Trump’s administration and just three races left to be decided, the party could enter the new year with very little room for error. Read More Breaking News, Latest News and Videos | CNN