A US politician has been exposed as an alleged supporter of Bigfoot erotica.

Republican candidate for Congress, Denver Riggleman, who is running in Virginia's 5th district, has been accused of aligning with white supremacists in the past, and has now been exposed for his alleged devotion to nude drawings of mythical ape creatures.

Mr Riggleman is running against former journalist Leslie Cockburn, the mother of actress Olivia Wilde. Ms Cockburn posted screenshots to her Twitter account this week of a private Instagram account where Mr Riggleman allegedly posts his Bigfoot erotica collection.

She accuses her running mate of being caught on camera campaigning with a white supremacist, and goes on to expose him as a devotee of Bigfoot erotica. She says Mr Riggleman "is not what we need on Capitol Hill [the seat of the US government]."