By Jim Ellis — Wednesday, March 19, 2025
Senate
Examining developing political events, we are already seeing the prelude to what might become the most competitive US Senate campaign cycle in decades.
Since Michigan Sen. Gary Peters (D) declared in late January that he will not seek re-election, three other Senators announced that they will also retire at the end of the current term. Depending upon the candidates each party fields, all of these newly open races have the potential of becoming expensive toss-up campaigns.
As we know, the other open seats are found in Kentucky (Sen. Mitch McConnell-R), Minnesota (Sen. Tina Smith-D), and New Hampshire (Sen. Jeanne Shaheen-D). Should the Kentucky Democrats convince Gov. Andy Beshear to run and likewise the New Hampshire Republicans recruit former Gov. Chris Sununu, these two states would certainly host major toss-up campaigns. Absent Beshear and Sununu running, each party would be favored to hold their respective seat.
Democrats expect to have the advantage in Minnesota, but it is unclear at this early point who their party will nominate. With Gov. Tim Walz (D) not running for Senate, Lt. Gov. Peggy Flanagan and former state Senate Minority Leader Melisa Lopez Franzen have announced their candidacies, while Rep. Angie Craig (D-Prior Lake) is listed as a possible contender. If Republicans can recruit a credible nominee, this open seat could transform into a competitive battle.
Perhaps the Republicans’ most vulnerable incumbent is North Carolina’s Thom Tillis; Democrats are trying to convince former Gov. Roy Cooper to enter that state’s Senate race. Like many others, Cooper is said to have presidential ambitions that could forestall a Senate challenge.
National Democrats would also like to see Maine US Rep. Jared Golden (D-Lewiston) challenge Sen. Susan Collins (R), but this is unlikely to happen. Golden is a former Collins staff member, and if he does run statewide it is more likely he will enter the open Governor’s race.
Two other Republican Governors are being recruited to run for the Senate, but it is unclear at this point if either will declare a bid. Georgia Gov. Brian Kemp and Virginia Gov. Glenn Youngkin would pair with Sens. Jon Ossoff (D-GA) and Mark Warner (D-VA), but there is no guarantee that either will make the move. Both have presidential aspirations and may not want to test their prospects for a national campaign in a Senate race where they stand a reasonable chance of losing.
Alabama Sen. Tommy Tuberville (R), reversing himself from his earlier statements and now saying he may well enter his state’s open Governor’s race, means we could see a very crowded, but determinative nominating campaign to succeed the Senator as the Republican nominee. Such an individual would then become a heavy favorite to win the general election, but the nominating process would be highly competitive.
Alaska Democrats would like to recruit former Rep. Mary Peltola (D) to challenge Sen. Dan Sullivan (R), but the lure of an open Governor’s race will likely be more tempting for Peltola.
Kansas Sen. Roger Marshall (R) stands for a second term next year, and the Democrats’ best potential candidate for this race is term-limited Governor Laura Kelly who cannot succeed herself. Kelly or Rep. Sharice Davids (D-Roeland Park) would be the Democrats’ best options for the Senate, but at this point there is little indication that either plan to run.
Expect, however, that Democratic Senatorial Campaign Committee chair Kirsten Gillibrand (D-NY) will make a strong push to convince one of those two to enter the Jayhawk State Senate race.
Louisiana Sen. Bill Cassidy (R) is likely to also experience a competitive re-election race but not for the general election. With his state returning to a partisan primary system, Sen. Cassidy, for the first time, will have to face a strong Republican challenger before only Republican voters. One such individual, State Treasurer and former Rep. John Fleming (R), is already campaigning and leading in a late February poll (JMC Analytics; Feb. 26-28; 600 likely Louisiana Republican primary voters; Fleming 40 – Cassidy 27 percent).
Should Texas Sen. John Cornyn (R) stumble in the early 2026 Republican primary, Democrats would have a chance of putting Texas in play particularly if flawed Attorney General Ken Paxton becomes the Republican nominee. National Democrats would like to see 2024 Senate nominee and former Congressman Colin Allred run again.
Additionally, two appointed Senators, Florida’s Ashley Moody (R) and Jon Husted of Ohio (R) must run in special elections to fill the balance of the current terms and both will be expensive campaigns in large states.
If all of the most prominent potential candidates were to run in these 15 potentially competitive states, we would see a very volatile set of US Senate campaigns.
Chances are, however, the list of eventual nominees from both parties will be a bit more mundane than in the aforementioned outlined scenarios. Several of these big-name potential Senate contenders may be more inclined, like former US Transportation Secretary Pete Buttigieg who just bowed out of the Michigan race, to follow the presidential winds.