Katy voters who cast ballots in Harris County may not see a clear picture of election results until midday Wednesday, Nov. 4, because of the volume of ballots expected in the 2026 midterm.

That warning comes from Mike Doyle, a former Harris County Democratic Party chair, who spoke with KPRC 2 about the counting process. Doyle said early voting and mail-in ballots will be among the first results posted after polls close at 7 p.m. Tuesday, Nov. 3.

In past elections, Doyle said, Harris County has had a clearer sense of outcomes by 2 or 3 a.m. But he cautioned that record-breaking ballot numbers could push that timeline back, saying the raw numbers mean counting "could go into Wednesday, the middle of the day."

What happens after polls close

Polls close at 7 p.m. The first results posted will reflect early voting and mail-in ballots. Counties with populations over 100,000 can begin counting received mail-in ballots after polls close on the last day of early voting, according to the Texas Tribune.

Election Day ballots can only be counted after voting ends. Once counting starts, state law says it cannot stop until completed. Election Day totals must be submitted to the state within 24 hours after polls close.

In Harris County, the third most populous county in the country, some polling sites are more than a 45-minute drive from county election headquarters, the Texas Tribune reported. To speed things up, Harris County uses more than one counting station where workers can drop off materials.

Harris County also has surveillance cameras at its voting centers. Doyle said virtually every area of the county's voting center is under surveillance, with the public able to visit and recordings maintained.

The road to certified results

Election night numbers are unofficial. Under the Texas Election Code, every race must go through canvassing and certification. Harris County has a Nov. 17 deadline to complete that process, 14 days after Election Day.

Several deadlines fall in between. Mail-in ballots sent within the U.S. must arrive by Nov. 4. Overseas mail-in ballots have until Nov. 9. All mail-in ballots must have been sent before 7 p.m. on Nov. 3. The deadline for officials to review provisional ballots is Nov. 13.

Local canvassing authorities, typically a county commissioners court, certify local races such as city council and mayor. Certifying results is a legal obligation under the Texas Election Code, which says officials "shall certify the tabulations."

Fort Bend County watches for glitch repeat

Katy-area voters in Fort Bend County head to the polls with a different concern. During the May primary runoff, a human error affected every voting site in the county, ABC13 reported. Fort Bend County Elections Administrator Chase Wilson said an employee uploaded the wrong file, and records showed it took three hours to fix. Some voters had to cast provisional ballots.

Wilson told ABC13 over the summer that the county added oversight and vendor safeguards, saying they would be in place by August and tested before the November election. He said he hopes to have a new voter registration system running by May to avoid similar problems.