(CNN) - This time the candidate will appear at the president's event.
Last month Missouri Secretary of State Robin Carnahan, who's also the Democrat's senate candidate, didn't team up with Obama when the president was in her state for a speech on health care reform and a political fundraiser. Instead, Carnahan was in the nation's capitol.
Republicans pounced on Carnahan. Their claim: Carnahan was trying to keep her distance from the White House in what's shaping up to be a tough election year for Democrats.
Democrats dismissed that charge and said it was a scheduling conflict. Her campaign said she was attending to official state business as part of her job as secretary of state.
Wednesday Carnahan is scheduled to be with Obama when the president tours an ethanol plan in Macon, Missouri, as part of his "White House to Main Street" tour.
Carnahan is locked in a battle against Republican Rep. Roy Blunt for the seat of retiring Republican Sen. Christopher Bond.
Later Wednesday the president is scheduled to speak about the need to pass financial reform at an event in Quincy, Illinois.
Illinois Treasurer Alexi Giannoulias, the Democratic Senate candidate in his state, is scheduled to join other statewide officials in appearing with the president at the event.
Giannoulias is facing off against Republican Rep. Mark Kirk for the Senate seat once held by Obama and now by Sen. Roland Burris, who is not running for a full term in office.
Giannoulias has seen his bid for the Senate rocked by the controversy over his family's bank, which was taken over by federal regulators last week.
The White House says this tour, which started Tuesday in Iowa, is not a political trip. But the president is speaking out about the economy - the top issue on the minds of American voters - in campaign-like settings. The tour also comes just over six months before this year's crucial midterm elections. With unemployment hovering just below double digits, the Democrats will try to defend their large majorities in the House of Representatives and the Senate, and their smaller advantage in controlling the governorships.
Follow Paul Steinhauser on Twitter: @psteinhausercnn