30 days out: the five forces that will decide who controls Congress
An unpopular president, a money gap, new maps, tight Senate races and early voting. Here is what will shape the final month of the 2026 midterms.
A month before the midterms, the race for Congress comes down to five forces: the President's ratings, money, redistricting, a handful of Senate seats and the early vote.
Thirty days from now, Americans will decide whether Republicans keep control of Congress for the final two years of President Donald Trump's term. The House leans toward Democrats. The Senate is up for grabs in states few expected to be competitive.
Five forces will decide how it ends. Some favor Democrats, some favor Republicans, and all of them can still move.
The first is the President himself. Midterms are usually a referendum on the White House, and Trump's numbers are weak. His approval is 37% in the Silver Bulletin average, and an AP-NORC poll this week found only 26% approve of his handling of the economy, a low for either of his terms.
The war with Iran has added to the pressure. Fuel prices have climbed, and Trump has openly tied the conflict's timeline to the election, saying the US would win "right after the election."
"Americans are disappointed, bordering on angry that President Trump hasn't delivered on core promises," Henry Olsen, a conservative analyst at the Ethics and Public Policy Center, told Al Jazeera.
The second force is money, and it runs the other way. The Republican National Committee has $125.6 million on hand, compared with the Democratic National Committee's $16.9 million and $17.6 million in debt. AdImpact projects Republicans and their allies will spend $888 million on ads from mid-September to Election Day, against $666 million for Democrats. At least $4 billion has already been spent on midterm advertising.
Money can matter most where races are closest. In Texas, ads backing Republican Ken Paxton totaled $94 million in September alone, more than three times the spending for Democrat James Talarico.
The third force is the map. Nine states are using new House districts, and about one in 10 potential voters now lives in a different district than in 2024, AP reported. Republicans could gain up to nine seats from the new lines, though a strong Democratic year could shrink that.
The map fight is not over everywhere. The Supreme Court rejected a Trump-backed map in Missouri for the third time on September 25, warning that switching maps in the middle of an election "would usher in electoral chaos."
The fourth force is a small group of Senate races. Democrats need a net gain of at least four seats, which means winning in places like Texas, Iowa and Ohio. Recent polls show Talarico ahead of Paxton 51% to 49%, Democrats narrowly leading in Iowa and Michigan, and Sherrod Brown ahead in Ohio. Republican Sen. Susan Collins leads in Maine. Nearly all of these leads are within the margin of error.
"There's much more drama in the Senate than the House races," Kyle Kondik of Sabato's Crystal Ball said.
The fifth force is time. Voting has already begun in several states, and most allow anyone to vote early in person. Georgia's early voting starts October 13, North Carolina's on October 15 and Texas's on October 19. Every day that passes locks in more ballots.
Independents may be the deciding group. A PBS News, NPR and Marist poll found unaffiliated voters backing Democrats 57% to 32%.
Forecasters agree on the direction but not the size. The Cook Political Report projects Democrats will gain between five and 15 House seats; they need 218 for a majority. Prediction markets are more confident, but they are bets, not polls.
A month is a long time in politics. A turn in the war, a shift in the economy or a late surge of spending could still change the picture before November 3.