Every election cycle sees its share of controversial, scandal-plagued candidates running for office. But the 2026 midterm elections will feature two such candidates – one from each party – in two of the highest-profile U.S. Senate races.

In Texas, the state’s attorney general, Ken Paxton, recently secured the Republican Party’s nomination over incumbent Sen. John Cornyn.

Cornyn and others have insisted that Paxton’s substantial legal and personal baggage – including corruption and bribery accusations that got him impeached by the GOP-led state House of Representatives – might lose Republicans a seat they’ve held for decades.

Democrats in Maine, meanwhile, have nominated Graham Platner, a political novice whose grassroots campaign and brash communication style propelled him to a decisive victory over the state’s Democratic governor, Janet Mills, who remained on the ballot but suspended her campaign in April.

This, despite Platner facing a series of personal scandals ranging from alleged sexual misconduct to a tattoo that turned out to be an emblem of Hitler’s paramilitary Schutzstaffel, or SS. Platner has claimed he was unaware of the symbol’s origins and has since covered it up.

Both Paxton and Platner won resounding victories in their primaries over more establishment candidates who were comparatively free of scandal.

As a scholar who studies Congress and elections, and the co-host of a podcast about political scandals, I believe political science offers answers about how Paxton and Platner pulled off victories in their states’ primaries – and why they might win in November.

Historic distance and distaste between the parties

Both Paxton’s and Platner’s flaws were well known prior to primary voting.

Early polling indicates that most of Texas’ Republican voters are likely to........

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