Thirty five Senate seats are on ballots this fall, counting the special elections in Florida and Ohio. Republicans are defending 22 of them, Democrats 13. For control of the chamber to change hands, Democrats need a net gain of four. Every argument about this election eventually collapses into that one number, so today, with voting already underway, here is the whole board in one sitting.
First, why the number is worth your time. The Senate majority decides which judges and executive nominees get confirmed, which subpoenas carry force, and what happens in December, when the next Fed decision, a government funding deadline and the health insurance signup crunch land in the same two weeks. Everything this newsletter has covered for months, the courts, the agencies, the confirmations that came down to one vote, runs through which party holds 51 seats. The margin is the mechanism.
The four most likely paths run through Alaska, Maine, North Carolina and Ohio, according to the public race ratings as they stand. North Carolina is open after Thom Tillis walked away rather than run again, and major raters moved it toward Democrats over the summer. Maine is Susan Collins, the only Republican senator left standing in a state that voted against Trump, protected mainly by her history of outrunning the ratings. Ohio’s special election gives Democrats a shot at a seat on an off year electorate. Alaska’s ranked choice system keeps its race live in ways a plain partisan lean would not.
Flipping four only works if Democrats hold their own 13, and two of those are the hard part. Georgia is Jon Ossoff, the cycle’s most exposed Democratic incumbent, though at least one major rater has recently moved him from toss up territory toward favored. Michigan is open after Gary Peters’ retirement, with Abdul El-Sayed facing Mike Rogers in what the raters call a consensus toss up. Do the math the way the parties do: flip four, lose Georgia or Michigan, and the majority stays where it is. The board is 35 races, but the whole game may be six of them.
Then there is Kentucky, the race that tells you what kind of year this is. Mitch McConnell, the longest serving Senate party leader in American history, is not seeking an eighth term, and the seat he held for four decades is open. Republicans nominated Congressman Andy Barr, who took the primary with 60.5 percent and Trump’s endorsement over former attorney general Daniel Cameron. Democrats nominated Charles Booker, back for a second run after 2022, who won his primary with 47 percent over Amy McGrath and Pamela Stevenson. Kentucky remains a reach for Democrats by every rating, but an open seat, a Trump loyalist nominee and a rematch candidate with statewide name recognition make it the race where a wave would show first.
South Carolina we have covered as it happened: Lindsey Graham needed a runoff to survive his own party’s primary and won it 52.5 to 47.5. That is not a general election problem by the ratings, but a sitting senator nearly losing his base tells you the temperature inside the Republican coalition, and it is the same temperature that produced the 14 lawmaker revolts and contempt findings we covered in Missouri.
Hold the calendar against the map and the shape of the fall appears. Voting opened Friday in Idaho, Minnesota, South Dakota and Virginia. Minnesota borders no Senate battleground, but Virginia’s voters are already banking ballots, and North Carolina’s have absentee ballots in hand now. The map is not a November 3 event. It is a rolling 45 day window that has already opened, closing state by state until the last polls shut. Whatever moves these races, a purge case ruling, a December rate signal, a shutdown fight, it lands on an electorate that is already voting.
So keep the one number. Four. Twenty two Republican seats defended, 13 Democratic, four paths and two must holds, one open seat in Kentucky where four decades of leadership just left the building. The board is set, the voting is open, and every week from here forward some of it becomes permanent. November 3. Forty five days.