Primary elections in four states on Tuesday - Maine, South Carolina, Nevada and North Dakota - bring together a set of story lines that could affect party control of Congress and the political map for governors. Voter decisions this week are coming against a backdrop of personal scandals, presidential endorsements and contested open seats.
The Maine contest and a sexting controversy
Among the more closely watched races is the Democratic primary in Maine for the U.S. Senate, where Graham Platner, an oyster farmer and political newcomer, appears likely to prevail. Platner, a 41-year-old former combat Marine, surged as an insurgent candidate who presented himself as a man of the people and attracted support from a broad range of Democrats. His momentum included significant fundraising and prompted Democratic Governor Janet Mills to suspend her own primary bid.
That trajectory has been complicated by a New York Times report that quoted former girlfriends who described some of his behavior as unsettling. The report said Platner sent sexually explicit texts to multiple women last year. Platner has apologized for his conduct and has said he has struggled with post-traumatic stress disorder and depression following combat service in Iraq and Afghanistan. He is married.
The central question in Maine is whether those revelations will alter the trajectory of the race and whether they matter politically in light of recent history. The outcome has implications for control of the U.S. Senate: the article notes that how voters respond to the controversy could affect Democrats’ chances of capturing a majority in the chamber. Internal party pressure could mount if Platner cannot contain the fallout; the deadline to place a replacement candidate on the November general election ballot is July 13, which would be the practical cutoff if party officials moved to seek a different nominee.
A competitive open House seat in Maine
Republicans see an opportunity in the open contest created by the retirement of Representative Jared Golden, one of the most moderate Democrats in the U.S. Congress. Former Republican Governor Paul LePage has launched a campaign for Golden’s seat in a district that President Donald Trump carried in 2024. LePage has what the president frequently calls his "complete and total endorsement."
On the Democratic side, three candidates appeared locked in a tight primary battle. The race to succeed Golden is being framed as a potential bellwether for whether Republicans can hold their slim majority in the U.S. House.
South Carolina governor’s primary - a Trump target?
In South Carolina, Representative Nancy Mace is competing for the Republican nomination for governor and is facing a politically fraught path after having called for the release of government files related to Jeffrey Epstein. The article notes that Mace was branded years ago by President Trump as "disloyal" and "nasty."
Trump’s late May endorsement of South Carolina Lieutenant Governor Pamela Evette has significant implications in a crowded primary. Evette is campaigning on an "America First" platform, and the endorsement increases the likelihood that Mace could be edged out of contention. The Cook Political Report has raised the possibility that Mace might fail to finish among the top two, which would trigger a runoff on June 23 between the leading contenders.
The Republican primary winner is widely expected to prevail in the November general election in this Republican-leaning state; the article notes it has been nearly three decades since a Democrat has been elected governor of South Carolina.
Nevada’s 3rd District and the House math
Nevada’s 3rd congressional district, a Las Vegas-area seat currently held by Democrat Susie Lee, is another high-stakes contest highlighted in the article. If Democrats are to reclaim control of the U.S. House in November, holding vulnerable districts like this one is critical. Although President Trump narrowly carried the district in 2024, Lee won her race by nearly seven percentage points, and the seat is among 13 that Trump won in 2024 that remain in Democratic hands.
Lee is seeking renomination and is being challenged by James Lally, a cardiologist who previously identified as a Republican and has since run as a Democrat. The article reports Lally has contributed $1 million of his own funds to his campaign. On the Republican side, a four-candidate primary is underway, led by three mostly self-funded contenders: Marty O’Donnell, a video game composer who has Trump’s endorsement; Aury Nagy, a neurosurgeon; and Jeff Gunter, a former U.S. Ambassador to Iceland. Businesswoman Tera Anderson is the fourth Republican candidate.
What to watch
Across these races, the combination of personal controversies, presidential endorsements and tight open-seat contests creates a mix of uncertainties that could ripple into the broader national political landscape. The Maine Senate result could influence control of the Senate; the contest to replace Jared Golden could help determine whether Republicans retain their narrow House majority; the South Carolina governor’s primary shows the continuing impact of Trump’s interventionist approach in Republican primaries; and Nevada’s 3rd District is a key seat for Democrats seeking to defend vulnerable territory.
The primaries in these states will produce immediate results about the candidates who will compete in November and may set the stage for intra-party debates and replacement considerations should controversies escalate.