Florida's U.S. Senate Special Election Heads Into Its August Primary

Florida voters go to the polls on August 18 for a primary election that will set the field in a U.S. Senate special election, a contest created when Marco Rubio resigned his seat to become secretary of state. The winner in November will serve the remaining two years of that term.

Sen. Ashley Moody, the Plant City Republican appointed by Governor Ron DeSantis in January 2025 to fill the vacancy, is seeking to keep the seat. She faces Republican primary challengers Neelam Taneja Perry, Chris Gleason, and Ernie Rivera. On the Democratic side, Alex Vindman and Angie Nixon are competing for the nomination.

The special election coincides with the regular 2026 election cycle, meaning it appears on the same November 3 ballot as the state's other federal and state contests and as the constitutional amendment on homestead property taxes.

How the seat became vacant

Rubio, who had represented Florida in the Senate since 2011, resigned to take the position of secretary of state in the second Trump administration. Under Florida law and the Seventeenth Amendment framework, the governor appoints a replacement to serve until a special election can be held.

DeSantis announced his selection of Moody on January 16, 2025. Moody had served as Florida's attorney general, an office she won in 2018 and held through her appointment to the Senate. Her elevation created a vacancy in the attorney general's office, which is itself on the 2026 ballot.

Appointed senators face a structural challenge when they seek election in their own right. They enter with the advantages of incumbency, including fundraising access and name recognition from federal office, but without having previously won a statewide federal race. Moody's prior statewide victories as attorney general partially offset that.

The Republican primary

Moody entered the race as the clear favorite. President Donald Trump formally endorsed her in the special election, an endorsement that carries substantial weight in Florida Republican primaries. Moody has emphasized her alignment with the administration's agenda, framing her candidacy around law and order, economic policy, and national sovereignty.

Her primary opponents, Neelam Taneja Perry, Chris Gleason, and Ernie Rivera, have not demonstrated the fundraising or institutional support that would typically threaten an endorsed incumbent. Florida's Republican primary electorate has generally followed presidential endorsements in recent cycles.

Moody qualified for the ballot in April, formalizing her candidacy. Polling reported by Associated Industries of Florida in June showed her holding a seven-point lead in a general election matchup against Vindman.

The Democratic primary

The Democratic contest presents a clearer choice between distinct profiles. Alex Vindman is a retired Army lieutenant colonel who became nationally known during the first Trump impeachment proceedings, in which he testified about a call between the president and Ukraine's leader while serving on the National Security Council staff.

Angie Nixon is a state representative from Jacksonville who has built a record in the Florida House as a progressive voice, particularly on housing, labor, and voting rights issues. Her base is in Northeast Florida and among the party's activist wing.

The two represent different theories of how a Democrat wins statewide in Florida. Vindman's candidacy rests on national fundraising capacity and a national security profile aimed at persuadable moderates. Nixon's rests on mobilizing Democratic base voters, particularly Black voters in Duval County and across North Florida, whose turnout has lagged in recent cycles.

Florida's shifted political ground

Florida has moved decisively toward Republicans over the past several election cycles, a shift that distinguishes it from its long history as the nation's premier swing state. Republicans overtook Democrats in statewide voter registration, reversing a Democratic advantage that had persisted for generations.

The change has been driven by several factors: growth in Republican-leaning retiree populations, gains among Hispanic voters in South Florida particularly among Cuban American, Venezuelan, and Colombian communities, and Democratic underperformance in the Interstate 4 corridor that had historically decided close statewide races.

Recent statewide margins reflect that shift. DeSantis won reelection as governor in 2022 by roughly 19 points, an outcome that would have been unimaginable in Florida a decade earlier. Rubio won his last Senate race by a comparable margin.

A seven-point polling lead, if accurate, would represent a narrower race than those results, though single polls this far out have limited predictive value and the sponsoring organization had endorsed Moody.

What is on the ballot alongside it

The November 3 ballot in Florida is unusually consequential. In addition to the Senate special election, voters will decide the governor's race, since DeSantis is term-limited, along with the attorney general's office vacated by Moody's appointment and other cabinet positions.

The constitutional amendment on homestead property taxes will also appear. That measure would raise the homestead exemption to $150,000 in 2027 and $250,000 in 2028, and would lower the annual assessment growth cap on non-homesteaded property from 10 percent to 5 percent. It requires 60 percent approval, and a lawsuit challenging its ballot language has a hearing scheduled for July 29.

Congressional races across Florida's delegation and state legislative contests round out the ballot. Turnout in a presidential midterm year in Florida typically runs below presidential-year levels, which historically has affected the two parties' coalitions differently.

What the winner would face

The special election winner takes office for the remainder of Rubio's term, which runs through the end of 2028. That means the seat returns to the ballot again in 2028 for a full six-year term.

For Florida specifically, the Senate seat carries responsibilities that touch the state's core interests: federal disaster funding and FEMA policy after hurricanes, flood insurance program reauthorization, immigration policy affecting the state's agricultural and hospitality workforces, Cuba and Venezuela policy relevant to South Florida's diaspora communities, and appropriations affecting NASA operations at Kennedy Space Center and the state's military installations.

Florida's senators also handle judicial nominations for the state's three federal district courts, whose caseloads include immigration, maritime, and financial crime matters distinctive to the state.

How Florida's closed primary works

Florida operates a closed primary system, meaning only voters registered with a party may vote in that party's primary. Voters registered with no party affiliation, who constitute a substantial and growing share of the Florida electorate, are excluded from partisan primaries entirely.

That structure has consequences for how campaigns are run. Candidates address the party electorate rather than the general electorate during the primary phase, and the party electorates in Florida are meaningfully different in composition from the November voter pool.

Florida does have a provision under which a primary becomes open to all voters if only one party fields candidates and the winner faces no general election opposition. That condition does not apply where both parties have contested nominations, as here.

Voters wishing to change party affiliation to participate in a primary must do so by a deadline that falls well before the election, and voters who miss it cannot switch at the polls.

The other races on the November ballot

The governor's race is the marquee contest, with Governor Ron DeSantis term-limited after two terms. Open-seat gubernatorial races draw substantially more attention and spending than races featuring an incumbent, and the outcome will determine the direction of state government for the next four years.

The attorney general's office is on the ballot as a consequence of Moody's appointment to the Senate. Florida's cabinet structure gives the attorney general, the chief financial officer, and the commissioner of agriculture independent statewide constitutional offices, each elected separately.

Florida's 28 U.S. House seats are all contested, along with state Senate and state House districts. Legislative outcomes determine whether Republicans retain the supermajorities that have allowed them to pass constitutional amendments and override procedural obstacles without Democratic support.

The homestead property tax amendment sits alongside all of it. Ballot measures can affect turnout composition, drawing voters who might otherwise skip a midterm, though the effect is difficult to predict and this measure has not generated a large campaign on either side.

What the numbers say about Florida turnout

Florida has roughly 14 million registered voters. Turnout in midterm cycles typically runs well below presidential-year participation, and the gap between the two has historically affected the parties' coalitions differently.

Vote by mail has become a substantial share of Florida participation, though changes to state law in recent years have altered the process, including a requirement that voters request mail ballots more frequently rather than having requests carry across multiple election cycles. Requests that were previously standing have had to be renewed.

That change has practical consequences for voters who assumed their mail ballot would arrive automatically. Voters intending to vote by mail should confirm an active request with their county supervisor of elections rather than waiting for a ballot to appear.

Early voting periods are set by county supervisors within parameters established by state law, and hours and locations vary by county. Supervisors publish schedules ahead of each election.

The appointed incumbent problem

Senators who reach the chamber by appointment rather than election occupy an unusual political position, and the historical record on how they fare when they face voters is mixed.

The advantages are real. An appointed senator accumulates a voting record, committee assignments, and the fundraising access that comes with incumbency. Federal office generates statewide media coverage that no challenger can match without spending heavily.

The disadvantage is legitimacy framing. Opponents routinely argue that an appointed officeholder was selected by one person rather than chosen by voters, a line of attack that has proven effective in some states and inert in others.

Moody's situation is stronger than the typical appointed senator's because she had already won statewide election twice as attorney general. She entered the Senate with a demonstrated capacity to win a Florida ballot, which is not true of appointees drawn from outside elected office.

What's next

The August 18 primary is the immediate milestone. Florida offers vote-by-mail and early voting periods ahead of primary day, and voters must be registered with a party to participate in that party's primary under Florida's closed primary system.

Voters who need to check or update registration can do so through their county supervisor of elections office. Registration deadlines for the primary fall well before election day, and voters who have moved should confirm their address is current.

After the primary, the general election campaign runs through November 3. Fundraising reports filed in the intervening period will offer the clearest indication of whether the Democratic nominee can mount a competitive statewide effort against an incumbent with a presidential endorsement.