In a primary challenge that has attracted significant attention, Rep. Matt Gaetz (R-Fla.) is facing off against Aaron Dimmock on Tuesday. This primary battle is part of a larger effort by former House speaker Kevin McCarthy (R-Calif.) to exact revenge on the Republicans who played a role in his ousting last year. Gaetz, a controversial figure within the party, led a group of seven House Republicans in joining forces with Democrats to remove McCarthy from his position in a historic vote.

Gaetz's primary race against Dimmock marks the final showdown for the anti-McCarthy GOP group running for re-election this year. While some members, including Reps. Ken Buck (Colo.) and Matt Rosendale (Mont.), chose not to run again, Gaetz has remained undeterred in his campaign against his own party colleagues despite the election of Rep. Mike Johnson (R-La.) as the new House speaker.

The primary campaign has been increasingly contentious, with Gaetz targeting Dimmock over his background in diversity training and emphasizing his close ties to former President Donald Trump, who has endorsed him. However, Gaetz has also faced allegations of sexual involvement with a 17-year-old girl, which he vehemently denies. Although the Justice Department opted not to press charges, the House Ethics Committee is still investigating the matter.

In terms of fundraising, Gaetz has significantly outpaced Dimmock, amassing $5.7 million through July, according to Federal Election Commission records. Dimmock, on the other hand, has received support from the Florida Patriots PAC, which has poured over $3 million into the race. Notably, the Florida Patriots PAC has been solely funded by America Fund, a group linked to the broader network that actively targets House Republicans who voted against McCarthy.

McCarthy has openly backed Dimmock since his entry into the primary race, and tensions between him and Gaetz have escalated, as seen during a dust-up at the Republican National Convention. McCarthy's support for Dimmock reflects his ongoing feud with Gaetz and his desire for retribution.

The Florida primary also holds significance for the Senate, as it is expected to determine the November matchup between Sen. Rick Scott (R) and his Democratic challenger, former congresswoman Debbie Mucarsel-Powell. Democrats view this race as one of their top opportunities to make gains in the Senate alongside the Texas race, where Sen. Ted Cruz (R) faces Rep. Colin Allred (D).

As the race between Scott and Mucarsel-Powell heats up, both candidates have emerged as front-runners in their respective primaries. President Joe Biden has voiced his support for Mucarsel-Powell, while Trump has endorsed Scott, reflecting the stakes in this pivotal election.

For Democrats, winning in Florida would be a chance to counter the state's recent rightward shift, with Trump winning there in both 2016 and 2020. Additionally, Scott, who previously chaired the Senate GOP campaign arm, has set his sights on becoming the Senate Minority Leader in 2025, positioning himself for a higher role within the Republican Party.

Meanwhile, in Alaska, voters are choosing candidates for the November election in one of the country's most competitive House seats. Democratic Rep. Mary Peltola currently holds the at-large seat, and she is among the most vulnerable House Democrats running for re-election in a district that Trump carried in 2020.

The primary system in Alaska allows all candidates, regardless of party affiliation, to appear on the same ballot. The top four vote-getters will advance to a general election that utilizes ranked-choice voting. Peltola and 11 other candidates, including four Republicans, are competing in the primary, with Lt. Gov. Nancy Dahlstrom and businessman Nick Begich emerging as the prominent GOP contenders.

As the primaries unfold, super PACs with ties to both parties have intervened, with attack ads targeting Peltola to ensure a split Republican vote in November. This scenario would provide Peltola with a clearer path to victory, counting on a consolidated party base in a closely contested race.

With significant financial support flowing into these primary races and high-profile endorsements from political figures, the outcomes will have implications for both the House and Senate races, shaping the political landscape leading up to November's general election.