Why It Matters
Sen. Mark Warner (D-VA) won reelection to Virginia's U.S. Senate Class II seat on Nov. 3, defeating Republican Bert Mizusawa and keeping the seat in Democratic hands, the Associated Press reported via WDBJ7. Unofficial results from the Virginia Department of Elections showed Warner receiving 2,175,916 votes to Mizusawa's 1,384,613, a margin of 791,303 votes, or approximately 22.2 percentage points, according to the Virginia Department of Elections' unofficial results as of 7:46 a.m. Nov. 4.
Warner's victory secured a fourth Senate term and preserved a Democratic seat as the party regained control of the chamber nationally. The change in majority will give Democrats control of Senate committees and greater authority to investigate President Donald Trump's administration when the new Congress convenes in January. Warner, currently the vice chairman of the Senate Intelligence Committee, will enter the new Congress with his party in the majority.
Money
Warner raised $27,493,348 in total receipts against Mizusawa's $1,141,130, an advantage of more than 24-to-1 and a gap of $26,352,218, according to the campaign finance figures compiled in the race record. Warner held $6,217,677 in cash on hand as of Oct. 14, while Mizusawa held $154,034 on the same date.
The race record listed $150,080 in independent expenditures supporting Warner, with no outside spending recorded against him or supporting or opposing Mizusawa as of Nov. 4. Fellowship PAC, a super PAC, reported $150,000 in support of Warner on July 27, according to Legis1.
An additional $47,916 in pending independent-expenditure notices from Thomas Paine Society LLC supporting Warner brought the reported total, including pending notices, to $197,996. The pending notices were not independently reconciled against subsequently filed reports.
Incumbent's Record
Warner first took office Jan. 3, 2009, and has served nearly 18 years in the Senate. He serves on the Select Committee on Intelligence, the Finance Committee, the Banking, Housing and Urban Affairs Committee, the Budget Committee, and the Rules and Administration Committee, along with several subcommittees, according to his Senate committees page.
In the 119th Congress, Warner sponsored S. 1634, the Augmenting Compatibility and Competition by Enabling Service Switching (ACCESS) Act of 2025, and S. 4046, the Economy of the Future Commission Act of 2026. Warner introduced the ACCESS Act on May 7, 2025, with Sens. Josh Hawley (R-MO) and Richard Blumenthal (D-CT) as original cosponsors. He introduced the Economy of the Future Commission Act on March 11 with Sen. Mike Rounds (R-SD). Both measures were referred to the Senate Commerce, Science and Transportation Committee upon introduction.
Campaign Context
The two candidates drew a clear contrast over Warner's relationship with the White House. According to the Virginian-Pilot, republishing the Richmond Times-Dispatch on Oct. 26, Mizusawa argued that Virginia needed a senator Trump would listen to, contrasting himself with Warner. Warner, the article reported, said Virginia needed a senator who would stand up to Trump rather than serve as a Trump ally.
The Virginia Independent reported Oct. 22 that Warner opposed the Iran conflict and tariffs, while Mizusawa defended Trump's decision on Iran and supported some tariffs. The publication characterized those policies as driving up costs for Virginians.
Primaries
Warner advanced to the general election without opposition after the Democratic primary scheduled for Aug. 4 was canceled. He therefore did not receive a recorded 100% share of votes in a contested primary election.
Mizusawa won the Aug. 4 Republican primary with 124,271 votes, or 51.5%, defeating David Williams, who received 69,725 votes, or 28.9%, and Kim Farington, who received 47,357 votes, or 19.6%. Mizusawa's total exceeded Williams and Farington's combined votes by 7,189. The three candidates accounted for all 241,353 votes reported in the state's Republican primary results.
Pre-Election Indicators
Major election forecasters consistently favored Warner. The Cook Political Report rated the race Solid Democratic as of Feb. 11, 2025. Cook, Sabato's Crystal Ball and Inside Elections all listed the race as Solid Democratic as of Nov. 3, according to the race record's ratings consensus.
On Kalshi, as of Nov. 2, Warner's implied probability of winning stood at 99%, compared with Mizusawa's 1%, according to the Kalshi Virginia Senate market.
PollsterGraph's aggregator showed Warner leading Mizusawa 60.58% to 35.97%, a 24.6-point margin, with the last poll dated June 16. According to the PollsterGraph Virginia Senate aggregator, the aggregator was based on two polls and did not represent a late-campaign final average. No final polling average from RealClearPolitics or FiveThirtyEight was available for this race.
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