Thomas Holbrook can discuss the potential political consequences of an impeachment inquiry into President Donald Trump, including the impact on press coverage of the primaries and the potential impact on the general election.

A distinguished professor of political science at the University of Wisconsin-Milwaukee, Holbrook has studied campaigns for three decades. He is the author of “Do Campaigns Matter?” and “Altered States: Changing Populations, Changing Parties, and the Transformation of the American Political Landscape.”