In politics, a purity test is a rigid standard on a specific issue by which a politician or other figure is compared.
[3][4][5] Similar criticisms have also been made toward the Conservative Party in relation to issues such as Brexit.
[10][11] Some Republican politicians, including Liz Cheney and Adam Kinzinger, were censured by their party for disagreement with Trump's false claims of election fraud.
[19][20] Former president Barack Obama broke his silence over the primary elections to warn Democrats about the danger of purity tests, saying that "we will not win just by increasing the turnout of the people who already agree with us completely on everything".
[21] In 2022, then-Democratic Senator Kyrsten Sinema was censured for disagreement with the party on filibuster reform, with some commentators describing this as an instance of purity testing.