Massachusetts politicians who will make national appearances on behalf of President Obama this week:

Colorado: Boston City Councilor Felix Arroyo, Oct. 3, 4.

Florida: State Representative Martha Walz, Oct. 3, 4.

Iowa: State Representative Hank Naughton, Oct. 3, 4.

North Carolina: Newton Mayor Setti Warren, Oct. 3; Melrose Mayor Rob Dolan and state Representative Linda Forry, Oct. 4.

New Hampshire: State Representative Bill Straus, Oct. 4.

Nevada: House majority leader Ron Mariano and state Representative Steve Walsh, Oct. 3, 4.

Ohio: Mayor Joe Curtatone of Somerville, Oct. 3.

Virginia: Dolan, Oct. 3; Curtatone and Warren, Oct. 4.

Wisconsin: State Representative John Scibak, Oct. 3, 4.