The 2020 United States Senate election in Texas was held on November 3, 2020, to elect a member to the United States Senate to represent the State of Texas, concurrently with the 2020 U.S. presidential election, as well as other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections. Incumbent Republican Senator John Cornyn won a fourth term against Democratic nominee MJ Hegar by 9.6%.
Prior to the election, most news organizations projected this race as "Lean Republican", and was not expected to be as competitive as the contest for Texas's other Senate seat two years prior, when Republican incumbent Ted Cruz defeated Democrat Beto O'Rourke by a 2.6% margin. Nonetheless, John Cornyn won in what was his worst performance out of his four elections for the U.S. Senate, while MJ Hegar's 43.9% marked the highest vote share of any of Cornyn's Democratic challengers. Despite this being Cornyn's worst performance percentage-wise, he more than doubled his 2014 vote count and received what was then the most raw votes for a Republican U.S. Senate candidate in the history of the United States; this record was later surpassed by Steve Garvey in California in 2024.
Cornyn outperformed President Donald Trump in the state by about 4%, and was able to carry two counties won by Joe Biden (Tarrant and Williamson). While Cornyn did better than Trump in the Texas Triangle, contributing to his over performance, Hegar slightly outperformed Biden in the heavily Hispanic Rio Grande Valley, and was able to carry one Trump county (Zapata), though Hegar herself vastly underperformed previous Democratic margins in the region.
with MJ Hegar and Chris Bell<br />
with MJ Hegar and Amanda Edwards<br />
with MJ Hegar and Cristina Tzintzún Ramirez<br />
with Royce West<br />
with Chris Bell<br />
with Sema Hernandez<br />
with Beto O'Rourke<br />
with generic Democrat<br />
with generic Opponent<br />
with generic Republican and generic Democrat<br />
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</div> Counties that flipped from Democratic to Republican
Counties that flipped from Republican to Democratic
Cornyn won 24 out of 36 congressional districts, including one that elected a Democrat.
Partisan clients<br />
Additional candidates and voter samples<br />
Official campaign websites