Texas Runoff Elections 101: What they are and why they matter
Runoff elections don’t generate the same attention as general elections, but they often decide who appears on the November ballot. In Texas, understanding how runoffs work can make the difference between being an informed voter and sitting out a contest that shapes your community’s representation.
What is a runoff election?
A runoff election occurs when no candidate wins a majority of votes — meaning more than 50% — in the primary election. Instead of declaring the top vote-getter the winner, Texas holds a second election — called a “runoff election” — between the two candidates who received the most votes. This ensures the winner has genuine majority support.
Texas uses majority-vote requirements in both party primary elections and some local elections. It’s a deliberate design choice that shapes who advances to the general election and, ultimately, who governs.
In contrast, most general elections in Texas are decided by a plurality, meaning the candidate with the most votes wins, even without a majority.
How many elections are effectively decided in the runoff?
In many parts of Texas, the most competitive election isn’t in November. It’s earlier and in the primary process. Because many districts lean heavily toward one party, the candidate who wins that party’s nomination often goes on to win the general election.
That means when a race goes to a runoff, the outcome of that low-turnout election can effectively determine who will hold office. In the 2026 runoff election, over 30 state and federal races will essentially be decided in May.
Your vote also carries more weight than you think
With fewer candidates and referendums on the ballot, runoff elections typically draw far fewer voters than the initial primary. For example, in the 2022 Republican primary for attorney general, approximately 1.9 million Texans voted in March. By the May runoff, turnout fell to about 932,000 — a decline of more than 50%.
In other words, runoff elections often combine high stakes with low participation, making them one of the most influential (and overlooked) moments in Texas elections.
Who can vote in a primary runoff?
Texas has an open primary system, but voters effectively “choose” a party primary each election cycle.
- If you voted in a party’s primary, you can only vote in that same party’s runoff.
- If you did not vote in either primary, you can choose which party’s runoff to participate in.
- You cannot switch parties between the primary and the runoff in the same election cycle.
Key dates to know for 2026
- Primary election: March 3, 2026
- Voter registration deadline: April 27, 2026 (30 days before the runoff)
- Early voting: May 18–22, 2026
- Primary runoff election: May 26, 2026
Check other deadlines and your registration status at VoteTexas.gov.
Why this matters
Runoffs exist to produce winners with genuine majority mandates. But that only works if voters show up. Whether you’re tracking a congressional race, a state legislative seat, or a local contest, these elections are too consequential to ignore. Before you head to the polls, use Texas 2036’s voter checklist to confirm your registration and make sure you’re ready to vote.
Want more context on the primary election cycle? Read our Texas Primaries 101 explainer.