Texas voters are heading into Election Day with one of the most closely watched U.S. Senate races in the country still too close to call. From South Texas to the Panhandle, a handful of voting trends could determine whether Republicans hold the seat or Democrats pull off a major upset.
Texas has long been considered a Republican stronghold, but this year's U.S. Senate contest is shaping up to be anything but predictable.
Republican Attorney General Ken Paxton and Democratic state Rep. James Talarico are entering the final stretch of the 2026 midterm election with polling showing a race within the margin of error. After months of campaigning, political attacks and efforts to energize their respective bases, the decision now rests with Texas voters.
For Paxton, the challenge is keeping the Republican coalition together while appealing to conservatives who may have preferred a different nominee. For Talarico, the road to victory requires stronger Democratic turnout, support from independents and enough Republican crossover votes to overcome the state's traditional conservative advantage.
Neither candidate has an easy path.
With millions of Texans already casting ballots during early voting, Tuesday's results could reveal whether the political landscape in Texas is undergoing another significant shift.
Here are five developments worth watching as the votes are counted.
1. Will South Texas Latino Voters Move Back Toward Democrats?
Few regions have experienced a more dramatic political transformation in recent elections than South Texas.
For generations, heavily Hispanic counties along the Texas-Mexico border were dependable Democratic territory. That changed significantly in 2024 when Donald Trump carried Cameron, Hidalgo and Webb counties, delivering Republicans historic victories in communities that had traditionally favored Democrats.
Starr County also experienced an extraordinary political shift, moving sharply toward Republicans compared with the 2016 presidential election.
Now Democrats are hoping some of those voters will return to their side.
Early voting participation in Hidalgo, Starr and Webb counties has been particularly strong, with more people voting early than during the 2024 presidential election.
That increased participation could benefit either party.
Talarico needs to improve Democratic margins in South Texas, particularly among voters concerned about economic conditions, health care, education and the direction of national politics.
Paxton, meanwhile, does not necessarily need to repeat Trump's historic performance. Simply maintaining a substantial portion of the Republican gains made over the past several elections could be enough to protect his statewide advantage.
The Latino vote also extends well beyond the border.
Bexar County, El Paso County and heavily Hispanic neighborhoods in Houston and Fort Worth could provide important clues about which candidate is building the stronger coalition.
The biggest question is not simply whether Latino voters are participating. It is which candidate they are supporting.
2. The Dallas-Fort Worth Suburbs Could Decide the Election
If there is one metropolitan area both campaigns will be watching closely Tuesday night, it is Dallas-Fort Worth.
Tarrant, Collin and Denton counties have become increasingly competitive as population growth, changing demographics and shifting political attitudes reshape North Texas.
Together, these three counties accounted for nearly 16% of the statewide vote in 2024.
Trump carried all three counties that year, but his margins were smaller than his statewide advantage.
That creates an opportunity for Talarico.
A Democratic victory in Tarrant County, combined with competitive performances in Collin and Denton counties, would suggest that suburban voters are moving away from Republicans.
Paxton will be looking for the opposite result.
Strong Republican performances in communities such as Keller, Colleyville, Celina and McKinney could help offset Democratic advantages elsewhere.
Another important factor is the Republican primary electorate.
U.S. Sen. John Cornyn performed relatively well in the Dallas-Fort Worth region during the March primary. Some of those voters may remain uncomfortable with Paxton as the Republican nominee.
Whether they ultimately support Paxton, vote for Talarico or leave the Senate contest blank could make a meaningful difference.
The region's growing Asian American population, particularly in Collin County, adds another layer of uncertainty.
In an election decided by a narrow margin, even relatively small shifts among suburban voters could have statewide consequences.
3. Can Talarico Reach 60% in Harris County?
Harris County has been a reliable source of Democratic votes in recent statewide elections, but winning the Houston-area county has not been enough to deliver a statewide victory.
That could make Talarico's final percentage there one of the most important numbers of election night.
In 2018, Democrat Beto O'Rourke received approximately 58% of the Harris County vote while narrowly losing his Senate race against Ted Cruz.
Since then, Democratic candidates have generally struggled to match that performance.
For Talarico, reaching or exceeding 60% would represent a significant achievement.
It would suggest strong Democratic participation across Houston's diverse neighborhoods and potentially improved support among suburban voters.
However, the percentage alone will not tell the entire story.
Overall turnout matters just as much.
Harris County has experienced substantial voter registration growth since 2018. A larger electorate could generate hundreds of thousands of additional votes, depending on participation and candidate preference.
Talarico has also made Black voter turnout a major campaign priority, announcing a $25 million initiative in September.
Neighborhoods such as Acres Homes, Sunnyside and Third Ward will be important areas to monitor.
Paxton will be counting on Republican turnout in more conservative parts of Harris County, including Cypress, Tomball and the Lake Houston area.
If Talarico approaches 60% while turnout increases substantially, Democrats will have reason for optimism.
If Paxton keeps the Democratic margin closer to previous elections, Republicans could remain in a strong position statewide.
4. Rural Texas Remains a Republican Firewall
While the state's largest cities receive much of the political attention, rural Texas continues to play an enormous role in statewide Republican victories.
Across the Panhandle, West Texas and East Texas, Republican candidates regularly receive overwhelming support.
In 2024, Cruz captured more than 80% of the vote in 104 Texas counties.
Those margins matter because they help Republicans counter the large Democratic vote totals coming from Houston, Dallas, Austin and other urban centers.
For Paxton, maintaining that rural advantage is essential.
But there are signs of frustration in some traditionally conservative communities.
Concerns involving large data center developments, water availability, infrastructure demands and rapid growth have created political tensions in several rural counties.
Those concerns do not automatically translate into Democratic votes.
However, they could influence turnout.
Some dissatisfied Republican voters might choose to stay home or skip individual races rather than support a Democrat.
That possibility makes counties such as Hale, Carson, Briscoe, Fisher, Hood and Navarro worth watching.
In the Texas Panhandle, where Republican margins are traditionally overwhelming, even modest changes could offer clues about conservative enthusiasm.
Talarico does not need to win rural Texas to remain competitive. He simply needs to reduce Republican margins enough to complement stronger Democratic performances in metropolitan areas.
Paxton, on the other hand, needs rural voters to turn out in force.
5. Third-Party Voters and Ballot Skipping Could Matter
One of the most overlooked factors in a close election is the number of voters who are dissatisfied with both major-party candidates.
This year's Senate race gives those voters another option.
Libertarian Ted Brown, who received 2.4% in the 2024 Senate election, is again on the ballot.
October polling has generally placed Brown between 1% and 3%.
That may seem insignificant, but in a race where the major candidates are separated by only a few percentage points, third-party support could become decisive.
Neither Paxton nor Talarico necessarily needs to receive an outright majority to win.
There is also the possibility of voters skipping the Senate race altogether.
Some Republicans who support Gov. Greg Abbott and other GOP candidates may be unwilling to vote for Paxton.
If those voters participate in other statewide contests but leave the Senate race blank, the difference could become apparent when comparing vote totals.
A significant gap between Abbott's performance and Paxton's would be particularly noteworthy.
Likewise, if Brown attracts more conservative-leaning voters than Democrats, his candidacy could complicate the Republican path to victory.
What Happens Tuesday Could Shape Texas Politics for Years
Beyond the immediate question of who wins, this election could provide important evidence about the future direction of Texas politics.
Republicans have dominated statewide elections for decades, relying on strong rural support, conservative suburban voters and an increasingly competitive presence in South Texas.
Democrats have struggled to break that dominance despite population growth and changing demographics in major metropolitan areas.
A Paxton victory would demonstrate that Republicans can maintain their statewide coalition even in a difficult and closely contested political environment.
A Talarico victory would represent a major breakthrough for Texas Democrats and potentially reshape how both parties approach future statewide campaigns.
Still, election night may not produce a clear answer immediately.
Large counties can take time to report results, and early returns may not reflect the final statewide picture.
The key will be watching how the candidates perform across different regions rather than drawing conclusions from any single county.
The bottom line: Paxton needs strong rural turnout, continued Republican support in South Texas and competitive suburban margins. Talarico needs significant Democratic participation in urban counties, gains among Latino voters and a meaningful improvement in the Dallas-Fort Worth suburbs.
Texas voters will ultimately decide whether the state's longstanding Republican advantage holds or whether 2026 becomes the year Democrats finally break through.
