New Hampshire and Minnesota Senate Races Rated Toss-Up as GOP Eyes Expanded Majority
Two states that Democrats have held reliably in recent cycles are now competitive enough in September 2026 polling to place Republican Senate seat expansion within measurable reach.
Republican candidates in New Hampshire and Minnesota are running within the margin of error against Democratic incumbents in September 2026 polling averages, according to RealClearPolitics, which rated both contests as too close to call as of September 17, 2026.
The RealClearPolitics analysis, published today, describes both races as "impossibly tight" and notes they have received limited attention from national political media. The framing reflects a shift in the Senate map from the one most forecasters described at the start of the 2026 cycle, when Republicans were expected to defend their majority rather than expand it.
Republicans currently hold 53 Senate seats following the 2024 election cycle, according to the official Senate roster maintained at senate.gov. A net gain of even one seat in November 2026 would push that total to 54, a margin not held by either party since the 111th Congress, when Democrats held 59 seats following the 2008 election.
In Minnesota, Democratic Senator Tina Smith, who was appointed in 2018 and won a full term in 2020 with 48.8 percent of the vote (Minnesota Secretary of State certified results), faces a cycle in which Republicans have fielded a candidate whose name and current polling margin are not specified in the available source material. The precise poll numbers, methodology, and sample sizes for the Minnesota race are not included in the RealClearPolitics summary reviewed for this report. The full RealClearPolitics polling average table, once published, would be the primary public record to confirm those figures.
In New Hampshire, Democratic Senator Jeanne Shaheen is not seeking re-election in 2026, having announced her retirement, which means the seat is an open contest. That fact increases its competitiveness independent of candidate-specific factors. Shaheen won her 2020 race with 55.7 percent of the vote, according to the New Hampshire Secretary of State's certified results. The absence of an incumbent on the Democratic side makes the New Hampshire seat a different category of risk than the Minnesota race.
A Republican pickup in New Hampshire would require flipping a seat the party has not held since John Sununu departed in January 2009. A pickup in Minnesota would be the first Republican Senate win there since 1978, when Rudy Boschwitz won election, based on Senate historical records available through senate.gov.
The competitive Senate environment in both states comes alongside a separate data point from Texas, where a RealClearPolitics opinion piece published the same day describes a conservative voter explaining a preference for a Democratic candidate, suggesting candidate quality and local fit are factors in individual races regardless of national partisan trends. That piece does not include polling data and represents one voter's stated rationale, not survey evidence.
Senate control determines committee chairmanships, confirmation authority over executive and judicial nominees, and the procedural threshold for treaty ratification. A Republican majority of 54 or more seats would give the party a larger buffer against defections on party-line votes, where the current 53-seat majority requires near-unanimous Republican agreement to advance legislation without Democratic support.
FEC filings through June 30, 2026, which are publicly available at fec.gov, would show candidate fundraising totals for both the New Hampshire and Minnesota races. Those figures are a standard indicator of campaign viability and have not been compiled for this report. The FEC's Q2 2026 filings are the relevant documents to assess financial competitiveness in both contests.
National Republican Senatorial Committee and Democratic Senatorial Campaign Committee independent expenditure filings, also available at fec.gov, would reveal whether either party has begun significant advertising investment in New Hampshire or Minnesota, which would be a measurable signal of how each party's internal modeling rates the races. Those filings are updated regularly and were not reviewed prior to publication.
What remains unknown as of today's report: the specific poll sponsors, sample sizes, and field dates underlying the RealClearPolitics averages for both states; the identities and FEC-registered names of the Republican nominees in each race; and whether any nonpartisan forecasters such as the Cook Political Report or Sabato's Crystal Ball have independently moved either race to toss-up status. Those forecaster ratings are published on their respective websites and would constitute the standard corroborating evidence for the competitive classifications cited in today's source material.
The November 3, 2026 general election results, certified by the relevant state election authorities in New Hampshire and Minnesota, will be the definitive public record resolving both contests.