Texas U.S. Senate Republican Primary Runoff
May 26th
This runoff decides the Republican nominee for one of the country’s most watched Senate races. John Cornyn, a four-term senator and former party whip, represents the traditional GOP establishment—deep ties in Washington, major fundraising, and a record of cutting deals. Ken Paxton, the sitting attorney general, has built a national profile by suing the Biden administration and aligning with the party’s populist wing. Neither cleared 50% on March 3, so Texas Republicans now choose between continuity and confrontation. The winner faces Democrat James Talarico in November; the nominee could also shape how competitive the general election looks and how national money flows into the state.
Maine U.S. Senate Democratic Primary
June 9th
Candidates
Janet Mills(D)
Graham Platner(D)
Nominee to challenge long-time incumbent United States Senator Susan Collins. Governor Janet Mills (Establishment) vs Graham Platner (Populist/Veteran). Platner has out-raised Mills with nearly $8 million in small-dollar donations, signaling a grassroots shift in a state that usually favors moderate Democrats.
Michigan U.S. Senate Democratic Primary
August 4th
Candidates
Haley Stevens(D)
Mallory McMorrow(D)
Abdul El-Sayed(D)
Open seat (United States Senator Gary Peters retiring). Three-way contest: United States Representative Haley Stevens (suburban moderate) vs State Senator Mallory McMorrow vs physician Abdul El-Sayed.
Alaska U.S. Senate Primary
August 18th
Alaska uses ranked-choice voting in this statewide primary: all candidates run on one ballot; the top four advance to the general election. Incumbent Dan Sullivan (R) vs. former U.S. Representative Mary Peltola (D) vs. other major candidates. Peltola, the first Alaska Native in Congress, entered the race in January 2026. She is the only Democrat to win a statewide election in Alaska since 2008. Senator Lisa Murkowski (R), who previously endorsed Peltola for the House, has endorsed Sullivan in this race.
Ken Paxton(R)
