Vice President Mike Pence is coming to Iowa Saturday to participate in an annual fundraiser for Republican senator Joni Ernst. Pence will speak at the third annual Roast and Ride event that's taking place this year in Boone. The event will begin with a motorcycle ride from a motorcycle store in Des Moines and then a pork roast will be held at the Central Iowa Expo site in Boone County. Then-candidate Donald Trump appeared at last year's event at the Iowa State Fairgrounds.