Herschel Walker files paperwork to enter next year’s Senate race in Georgia.

Mr. Walker, a former football player who became a high-profile ally of former President Donald J. Trump, is set to vie for the seat held by Senator Raphael Warnock, a Democrat.

‘I’m Getting Ready’: Football Star’s Cryptic Video Could Upend Georgia Senate Race

If the Georgia college football legend Herschel Walker declares his candidacy it could put former President Donald J. Trump’s power as a kingmaker to the test.