A white nationalist is now the frontrunner in the GOP primary in Paul Ryan's district.

Longshot candidate and self-described “pro-white” politician Paul Nehlen is now the leading Republican to take over Ryan’s Wisconsin seat now that Ryan, the current Speaker of the House, is not running for reelection.

Nehlen incited international outrage in February, when he tweeted a photo of Prince Harry’s fiancĂ©e Meghan Markle with an image of a dark-skinned, prehistoric human known as “Cheddar Man.”

(Markle’s mother is black.) Alongside the image, Nehlen tweeted, “Honey, does this tie make my face look pale?”

That racist tweet prompted Twitter to permanently ban Nehlen, though it wasn’t the first time he’d drawn criticism on the platform. In January, he posted a list of his critics and claimed most of them were Jewish. He’s also used the hashtag #ItsOkayToBeWhite, according to the Milwaukee Journal Sentinel, which dubbed Nehlen an “outrage artist.”

Read: Paul Ryan stepping down is a gift to House Democrats ahead of the midterms