Democratic presidential candidate Eric Swalwell is out of the race, while billionaire Tom Steyer is in. Also this week, pressure increases for U.S. Secretary of Labor Alex Acosta to resign after a controversial plea deal and a court rules that President Trump may not block his Twitter critics. On this politics day edition of River to River , host Ben Keiffer talks with analysts Steffen Schmidt of Iowa State University and Kedron Bardwell of Simpson College about these along with other political headlines. Also, we continue our series of interviews about the leadership of 2020 candidates with a home state view of former Vice President Joe Biden. Guests include: Steffen Schmidt , Lucken Endowed Professor of political science at Iowa State University Kedron Bardwel l, professor and chair of political science at Simpson College Tom Byrne , news director at Delaware Public Media