India, May 20 -- Incumbent Republican lawmaker Thomas Massie is going up against Donald Trump-endorsed Ed Gallrein in Kentucky's 4th congressional primary. Polling began at 6am on Tuesday and closes at 6pm. The Congressional race, which is reportedly the most expensive in US history, will likely be watched closely in the White House.

Not only will it be a test for Trump's influence there, after he won by more than 30 points in 2024, but it'll also show whether Massie wins after going against the president. Massie, reportedly a libertarian-leaning Republican, has pushed back against some of Trump's policies, and massively advocated for the release of the Epstein files.

The Democrat candidates in the race are Jesse Brewer and Melissa Stra...