A Democratic challenger to Senator Chuck Grassley will be in Knoxville tonight.

State Senator Rob Hogg will join Marion County Democrats at the Fox Pub and Grill. Those who plan to attend are encouraged to join the Democrats for dinner, and the meeting begins at 6:30. Rob Hogg is currently serving his third term as state senator for Senate District 33 in Cedar Rapids after two terms as a state representative in the Iowa House. Final preparations for the February 1 caucuses will also be discussed, so organizers say please arrive early if you wish to volunteer.