Democrats held events Monday in Grand Rapids, Lansing and Detroit.
Romney's visit to Michigan today is part of a campaign swing by bus. The former Massachusetts governor and Michigan native is planning rally at the Bavarian Inn in Frankenmuth, a stop in DeWitt at the Sweetie-licious Bakery Cafe and a rally at Holland State Park.
Romney also plans to attend fundraisers Wednesday in Grand Rapids and Troy.
Romney's six-state "Every Town Counts" tour began Friday.
The Democratic National Committee's own bus tour has been going through the same states Romney is visiting ahead of time.