Maryland Governor Martin O'Malley is weighing a long-shot 2016 White House bid. (Mark Makela/Getty Images)

Maryland Gov. Martin O’Malley (D) is headed back to Iowa this weekend for his fourth visit to the early presidential nominating state since June.

O’Malley, who is weighing what could be a long-shot 2016 White House bid, has events both Saturday and Sunday with candidates on the November ballot in Iowa, according to an itinerary released by aides. He is also booked at a previously announced Minnesota Democratic-Farmer-Laborer Party dinner Saturday night in Minneapolis in between Iowa stops.

Maryland Gov. Martin O’Malley has traveled across the country since January 2013 to raise money for other Democrats and lay the foundation for a possible bid for the White House.

The Iowa events include a pancake breakfast in Ottumwa for state Senate candidate Steve Siegel; an appearance at a get-out-the-vote event and church visits in Des Moines with the state’s Democratic gubernatorial nominee Jack Hatch; a get-out-the-vote lunch in Iowa City with College and Young Democrats; a fundraiser in Fairfield for U.S. Rep. Dave Loebsack (D-Iowa); and a fundraiser in Dubuque with U.S. Senate candidate Bruce Braley.

O’Malley has said he is preparing to run for the Democratic presidential nomination regardless of whether Hillary Rodham Clinton enters the race. He told The Washington Post last month that he “probably” will make a decision about running before his tenure as governor ends in late January.