Democrat Troy Jackson won the Maine Senate seat on Tuesday, unseating Republican incumbent Susan Collins. The victory ends Collins' tenure of nearly three decades in the U.S. Senate.

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The 52.6 percent margin that ended a 30-year era

Troy Jackson secured a decisive victory in the Maine U.S. Senate election, capturing 52 .6 percent of the vote compared to 47.3 percent for Susan Collins, according to projections from NBC News. This result removes Susan Collins from the upper chamber, where she had served since her first election in 1996. Following the polls closing on Tuesday night, Susan Collins contacted Troy Jackson to concede the race.

The defeat of Susan Collins represents a significant shift in the balance of power for the Republican Party, which has been fighting to maintain a slim majority in the Senate. In a formal statement, Susan Collins expressed pride in her service to Maine and pledged that her staff would coordinate with the team of Troy Jackson to ensure a smooth transition of power.

How $200 million made Maine the nation's costliest per capita race

The contest for the Maine Senate seat became the most expensive per capita race in the United States, with total campaign spending reaching nearly $200 million. As the report says, this massive financial investment reflects the strategic importance both the Democratic and Republican parties placed on this specific seat within the broader national political landscape.

This surge in spending suggests that national interests viewed Maine as a critical tipping point for federal policy influence. The sheer volume of capital poured into the state underscores how the outcome of this single race was seen as a bellwether for the midterm cycle's overall trajectory.

From Graham Platner's July 10 exit to Jackson's nomination

The path to victory for Troy Jackson was paved by extreme instability within the Democratic Party. The original nominee, Graham Platner, was forced to withdraw from the race on July 10 after a former partner publicly accused him of rape during a 2021 encounter at her home. This scandal left the Democratic Party scrambling for a viable alternative just months before the election.

State party delegates eventually rallied around Troy Jackson, who had previously finished third in the gubernatorial primary, officially selecting him as the replacement candidate by July 25.. Despite the late start, Troy Jackson was able to consolidate party support and pivot the campaign toward national issues.

The Kavanaugh confirmation and the fall of the moderate brand

Troy Jackson successfully leveraged voter anger over the judiciary, specifically targeting Susan Collins' vote to confirm Supreme Court Justice Brett Kavanaugh. Democratic attack ads focused heavily on how that confirmation enabled the subsequent overturning of Roe v. Wade, a move that resonated strongly in the blue-leaning state of Maine.

To counter this, Susan Collins leaned on her reputation for bipartisanship and her history of occasionally defying the president. She even enlisted former Senator Joe Manchin to campaign on her behalf, attempting to frame herself as a necessary moderate voice. However, according to the report, this strategy failed to outweigh the perceived damage caused by her support for President Trump's judicial agenda.

The Katherine Hamilton connection and the Breitbart link

While Troy Jackson won the seat, his campaign was not without its own controversies, specifically regarding his longtime partner, Katherine Hamilton.. Katherine Hamilton is a political reporter for Breitbart News, and the source notes that Jackson faced scrutiny over "credible allegations" involving her during the campaign.

Crucially, the source does not specify the nature of these allegations against Katherine Hamilton, nor does it provide a response from Katherine Hamilton or Troy Jackson regarding these claims. This remains a significant blind spot in the reporting of the race, leaving the exact nature of the controversy unverified.