Senate Control Hinges on Turnout

The path to Senate control has shifted from a longshot to a realistic goal for Democrats.

At the start of the cycle, many observers viewed the party as unlikely to gain seats because most contests were located in states where Donald Trump won by large margins in 2024. The ongoing war in Iran has altered that outlook. Polling data, advertising expenditures, and candidate travel patterns now indicate tight races in five states that Trump won by double digits: Alaska, Iowa, Kansas, Ohio, and Texas. The Cook Political Report currently labels all five as Toss Ups. Every one of these contests sits within the margin of error.

Sen. Kirsten Gillibrand, D-N.Y., chairs the Democratic Senatorial Campaign Committee. She described the current field as energizing. "People want change, and we have so much talent on the field right now," she said. Bernadette Breslin, national press secretary for the National Republican Senatorial Committee, offered a contrasting view. She called the Democratic surge a "fever pitch" and described their efforts as "desperate conspiracies to defraud voters." That comment referenced a recruiting controversy in the Alaska race involving Democratic candidate Mary Peltola and incumbent Dan Sullivan, a mix-up first reported by The New York Times.

The political winds have shifted in states that were previously considered safe. North Carolina, where Trump won by three points in 2024, is now viewed as a likely flip for Democrats. Former Gov. Roy Cooper is the consensus choice for the open seat. President Trump acknowledged Cooper’s likely victory during a recent stop in the state, calling the prospect "crazy." Georgia, once a top Republican target, is now a likely hold for Democrats. In South Carolina, where Trump won by 18 points, the race is only leaning Republican. Mississippi and Nebraska remain competitive but favor the GOP.

Democrats must flip a net of four seats to claim the majority. Republicans are targeting Michigan, New Hampshire, and Minnesota to complicate that math. In Michigan, the race is a Toss Up. Democrat Abdul El-Sayed faces a challenge from former Rep. Mike Rogers, who has adopted a MAGA stance. In Ohio, former Sen. Sherrod Brown is challenging incumbent John Husted. Brown’s high name recognition has forced Republicans to treat him as an incumbent despite his challenger status. Issues such as the economy, gas prices, and AI data center growth have given Democrats an opening in a state Trump has won three times.

Texas presents a complex scenario. Democrats have not won a statewide race there since 1994. However, State Rep. James Talarico has led in nearly every poll, even though those leads are within the margin of error. More than $500 million has been spent on the race since the primary, with Republicans accounting for over $300 million of that total. The outcome in Texas depends partly on whether Democratic gubernatorial candidate Gina Hinojosa can drive high Latino turnout in South Texas. In Iowa, Democrat Josh Turek is in a tight race with Rep. Ashley Hinson. Agricultural economic pressures from tariffs and the war have hurt the state’s GOP base.

The final variable is Republican turnout. Low GOP participation could result in a Democratic net gain of one or two seats. High participation could lead to a pickup of six or seven. The Cook Political Report rates North Carolina as Tier 1 for a potential flip. Michigan and Ohio sit in Tier 2. Alaska, Iowa, Maine, and Texas are in Tier 3. Kansas, New Hampshire, South Carolina, and Minnesota form Tier 4. Mississippi, Nebraska, and Georgia are in Tier 5.

In Maine, Sen. Susan Collins is fighting for re-election in a state Kamala Harris won in 2024. Democrat Troy Jackson has a viable shot due to the state’s Democratic base. In New Hampshire, Rep. Chris Pappas holds a slight edge over former Sen. Jon Sununu. In South Carolina, Democrat Annie Andrews faces a challenging environment against a novice Republican candidate, despite the state’s strong Republican lean. In Minnesota, Democrat Peggy Flanagan faces pressure from a Medicare fraud scandal narrative, though the state remains a Democratic lean. In Georgia, Raphael Warnock’s opponent, Jon Ossoff, is the heavy favorite to retain the seat.