He said there is probably more we can take away from the roughly 50 QAnon supporters who are running for Congress this year. Their campaigns suggest adherents of a fringe theory feel emboldened to come out of the shadows under Trump.

QAnon believers tend to support other conspiracy theories about government, experts said. And Trump has tacitly breathed life into these ideas. The central theme around QAnon fits his argument that he’s an outsider being dragged down by (mostly Democratic) lawmakers who feel threatened by him and the change he brings to governing.

Trump hasn’t explicitly endorsed QAnon, but he seems aware that its adherents align with his base. He has retweeted QAnon supporters, and there has been a growth of “Q” signs at his rallies.

Perhaps just as important, he has embraced other conspiracy theories.