Redistricting has created four competitive congressional races pitting two incumbents against one another and giving a House veteran his toughest challenge yet.
Iowa lost one district in redistricting, creating much of the upheaval. It prompted nine-term Republican Rep. Tom Latham to move into the 3rd district to avoid running against GOP Rep. Steve King. In the 2nd district, Democratic Rep. Dave Loebsack moved to avoid opposing Democrat Bruce Braley.
The result is a race between Latham and eight-term Democratic Rep. Leonard Boswell and a situation in which all the congressional candidates are running in districts markedly different than two years ago.
For King, there's the additional challenge of running for the first time against a well-funded and known Democrat, Christie Vilsack. King says it's his toughest race since being elected.
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