Will Platner controversy sink Democrats in a crucial U.S. House showdown?

EXCLUSIVE - AUGUSTA, Maine - Graham Platner is gone, but the trail of debris left from the mounting controversies that brought down his nearly year-long insurgent Senate campaign is giving Republicans ammunition to use against a Democrat on the ballot in another equally crucial midterm race in Maine.

Former two-term Maine Gov. Paul LePage, the GOP nominee in the high-stakes battle for the state's 2nd Congressional District, one of roughly two-dozen races that may determine the House balance of power...