(CNN) - On the same day Democratic leaders stressed party unity after the drawn out primary fight, one congressional Democrat said Tuesday he will not endorse Barack Obama's bid for the White House.
Rep. Dan Boren, Oklahoma's lone Democrat in Congress, told the Associated Press Obama is "the most liberal senator," and said he has to listen to the wishes of his own constituents.
"We're much more conservative," Boren said of his rural district which stretches across the eastern part of the state and borders Kansas, Missouri, Arkansas, and Texas.
"I've got to reflect my district. No one means more to me than the people who elected me. I have to listen to them," Boren added. His congressional office confirmed the accuracy of the quotes to CNN.
Boren also said Obama's record "does not reflect working in a bipartisan fashion." But the Oklahoma Democrat said he would vote for Obama at the party's convention in August because of the serious issues the country faces.
"I think this is an important time for our country," he said. "We're facing a terrible economic downturn. We have high gasoline prices. We have problems in our foreign policy. That's why I think it's important."
Boren's comments come a day after Florida Democratic Rep. Tim Mahoney also said he has no plans to make a formal endorsement. The freshman Democrat, who replaced Republican Rep. Mark Foley following House page scandal, told the Palm Beach Post he plans on remaining an uncommitted superdelegate and may not even attend the convention.