The closely contested Texas U.S. Senate race between Republican Ken Paxton and Democrat James Talarico drives turnout expectations, with recent polls showing margins under five points and sustaining uncertainty over total participation on November 3. Both campaigns are intensifying voter mobilization, early voting outreach beginning October 19, and targeting of suburban independents, Hispanic communities, and younger voters to expand their coalitions. Historical midterm patterns, open-seat dynamics following the primaries, and questions around base enthusiasm versus crossover voting keep probabilities distributed across mid-range outcomes. Late developments in get-out-the-vote efficiency or shifts in likely-voter assumptions could separate the leading ranges.