Maryland Gov. Martin O'Malley. (AP Photo/Jae C. Hong)

Maryland Gov. Martin O’Malley will be back in Iowa this weekend as part of a planned swing through three Midwest states, aides said.

O’Malley (D), who is ramping up for a possible 2016 White House bid, is slated to host a fundraiser in Iowa City on Sunday for Jack Hatch, the state’s Democratic nominee for governor this fall. It will be O’Malley’s third trip to the nation’s first presidential nominating state since June, when he addressed a Democratic state convention in Des Moines.

The fundraiser is part of a series of weekend events in which O’Malley is seeking to help other Democrats who are on the ballot this November.

On Saturday, he plans to campaign in Illinois with Sen. Richard J. Durbin (D), who is up for reelection. He also has events planned Sunday with Illinois Gov. Pat Quinn (D), who is also up for reelection, and with Mary Burke, the Democratic nominee for governor in Wisconsin, who is challenging Gov. Scott Walker (R).

The events come amid a busy fall travel schedule. O’Malley is expected to decide in coming months whether to move forward with a White House bid, which could involve challenging Hillary Rodham Clinton for the Democratic nomination.