Candidates who Donald Trump (R) endorsed in 2026 primaries have won 220 of 227 (97%) of their races so far — one percentage point less than the 2020 election cycle, when 98% of Trump-endorsed candidates won their primaries. Those figures include scenarios in which Trump endorsed two candidates in the same race.

In total, Trump has endorsed 307 primary candidates in the 2026 election cycle — more than in any previous election cycle since 2018. Trump endorsed the second-most candidates in an even-year election in 2024, when he endorsed 270 candidates in primary elections.

One hundred fifty-nine of the 227 candidates whose primaries have already happened were incumbents, 42 ran for open seats, and 26 challenged an incumbent. These figures do not include endorsed candidates who withdrew or for whom the election has not happened yet. This includes congressional, state legislative, and state executive races.

So far, the 2026 primaries are the second-most successful for Trump-endorsed candidates, as 97% have won their primaries. The most successful cycle for Trump-endorsed candidates since 2018 was in 2020. That year, 98% of Trump-endorsed candidates won their primaries. The 2022 primary elections were the least successful for Trump-endorsed candidates in even-numbered years since 2018. That year, 93% of Trump-endorsed candidates won their primaries.

Compared to state-level candidates, Trump-endorsed congressional candidates have been the most successful this year. So far, all 170 of Trump-endorsed congressional candidates have won their primaries.

All seven Trump-endorsed candidates who have lost their primaries so far were candidates at the state level.

Two state legislative incumbents lost their primaries — North Carolina Senate President Pro Tempore Phil Berger (R) and Indiana Rep. Bruce Borders (R). One challenger to an incumbent — Brenda Wilson (R) — lost the primary for Indiana Senate 38.   

Three candidates — Randy Feenstra (R) of Iowa, Pamela Evette (R) of South Carolina, and Burt Jones (R) of Georgia— lost open gubernatorial primaries or primary runoffs. 

The seventh Trump-endorsed candidate to lose a primary was incumbent Sid Miller (R), who is the incumbent Texas Commissioner of Agriculture.