Two other House members said they either would resign or not run for re-election this year after scandals in their personal lives.
Rep. Tim Murphy, R-Pa., announced his resignation in October after reports that the pro-life lawmaker asked his mistress to get an abortion. In March, Republican Rick Saccone and Democrat Conor Lamb will vie for the 18th District seat in a special election.
That race appears to favor Republicans. While little polling on the race has surfaced so far, it leans Republican, according to Cook. Murphy won it uncontested in 2016.
In November, Rep. Joe Barton, R-Texas, announced that he would not run for re-election. A nude photo of the lawmaker and lewd message he had written surfaced on the internet. Barton expressed regret for the incident, and said a woman with whom he had a consensual relationship had threatened to share photos of him.
His 6th District appears safe for Republicans.
In the Senate, Minnesota Democrat Al Franken resigned at the start of the year amid accusations of sexual misconduct before he was in Congress. While Franken either denied the incidents or said he remembered them differently, he admitted that he could no longer serve effectively.
Sen. Tina Smith, D-Minn., replaced Franken after getting appointed by Minnesota Gov. Mark Dayton. She will have to face an election this year.
Cook rates the race as a toss up. Clinton narrowly won Minnesota in 2016.