(CNN) - As Republicans in Missouri and Michigan head to the polls Tuesday to vote in their state's GOP Senate primary races, Mitt Romney will campaign in the Midwest, attending fund-raisers in Chicago and West Des Moines. President Obama will be in Washington Tuesday.
See the full schedule after the jump.
11:30 a.m. ET: Potential V.P. pick Sen. Rob Portman attends the opening of a Romney campaign office in Ontario, Ohio.
11:40 a.m. ET: Mitt Romney holds a campaign event in Elk Grove Village, Illinois.