"Until there are more moderates elected they aren’t going to be able to galvanize and be able to leverage the votes that they need to have any influence," says Danielle Thomsen, assistant professor of political science.

"If something big is revealed—an impeachable offense by the president—that could be a significant factor in creating a blue (Democratic) wave," says Grant Reeher, professor of political science and director of the Campbell Public Affairs Institute. On the other hand, he says, if the investigations end with nothing really significant or new "it gives power to President Trump's narrative that it has all been a witch hunt, which could give Republicans a boost."