Trump-endorsed candidates claimed Senate runoff victories in Georgia and Alabama Tuesday night, extending the president's grip on Republican primary politics across the South.

In Georgia, Trump's Senate pick advanced past the runoff threshold, setting up a general-election contest in one of the cycle's most-watched battleground states.

Alabama returned a similar result, with the Trump-backed contender turning back a rival to secure the Republican Senate nomination.

The night's sharpest result came in the Georgia governor's race, where Trump's chosen candidate failed to finish in the top two and will not appear in a runoff. It was a rare primary-night defeat for the president in a state he has made a repeated target of political investment.

Oklahoma rounded out the evening's primary calendar, though no statewide outcome there matched the profile of the Georgia governor's race in national attention.

The Georgia governor's runoff is expected to be scheduled in the coming weeks, now set to proceed without the Trump-endorsed candidate on the ballot. Senate general-election contests in Georgia and Alabama move forward with the president's preferred nominees confirmed.