Trump Pressured Georgia Official to ‘Find’ Enough Votes to Overturn Election

From the Washington Post: “The Washington Post obtained a recording of the conversation in which Trump alternately berated Raffensperger, tried to flatter him, begged him to act and threatened him with vague criminal consequences if the secretary of state refused to pursue his false claims, at one point warning that Raffensperger was taking “a big risk.””

In what possible way could this be legal?