Trump's endorsement collides with $1.3M effort to oust House ally

A key congressional primary race will serve as a test of President Donald Trump's political weight on Thursday night.

Voters in Tennessee's 5th Congressional District are headed to the polls to decide between Trump-backed Rep. Andy Ogles, R-Tenn., and Republican Charlie Hatcher, the former state agriculture commissioner, who scored an 11th-hour endorsement from Gov. Bill Lee on Tuesday evening.

Ogles, one of Trump's most vocal allies in Congress, is seeking a third term representing the Middle Tennessee district...