Republican voters in northern Kentucky are choosing between U.S. Rep. Thomas Massie and challenger Ed Gallrein in Tuesday's House primary.

Dozens of candidates are running for Congress in Kentucky. Here's a look at primary election results in the state's six districts.

Representative Thomas Massie of Kentucky, one of President Donald Trump’s most vocal Republican critics, lost his re-election bid to a Trump-backed primary challenger in a major political victory for the president.

There are primary elections Tuesday in Kentucky, Alabama, Idaho, Oregon and Pennsylvania. These contests will be a further test of President Donald Trump’s grip on Republican voters.

Rep. Andy Barr (R-Ky.) is projected to win the Republican primary for Senate in Kentucky, putting him on a glidepath to replace retiring Sen. Mitch McConnell (R), the longest-serving Senate leader in history.

Donald Trump’s hand-picked candidate for a congressional seat in Northern Kentucky, Ed Gallrein, defeated the president’s nemesis and longtime GOP House member Thomas Massie in one of the most expensive primaries on record.

Kentucky’s Republican Senate primary to replace Sen. Mitch McConnell is becoming a test of the Republican Party’s transformation under President Donald Trump. Rep.

Fox News correspondent Mark Meredith has the latest on the Kentucky primary on 'The Ingraham Angle.'