Race intensifies for Iowa Senate seat
With 35 seats up for election in the U.S. Senate in 2020, Democrats have their eyes on several states as they look to gain control in November. In Iowa, incumbent GOP Senator Joni Ernst faces a tough reelection bid as her approval ratings dip. Brianne Pfannenstiel, chief political reporter at the Des Moines Register, speaks with CBSN about the contested race.