(CNN) - Barack Obama said Wednesday he has a problem appealing to senior voters.
Assessing his loss in Pennsylvania, the Illinois senator said Tuesday's primary result was not primarily due to how working class Democrats voted - a voting bloc that has long supported Clinton over Obama - then with the decisions of older voters.
"I have to say if you look at and I know my staff has talked about this: If you look at the numbers, our problem has less to do with white working class voters, the problem is, to the extent there is a problem is with older voters," Obama told reporters. "They are very loyal to sen Clinton. And I think part of that is they've got a track record of voting for not just Sen. Clinton but also her husband."
"We need to make sure on issues that are important to them - like prescription drugs or pension and retirement security - that I've got a strong track record on those issues and very specific plans to make sure that they are getting the kinds of help that they need," he also said. "And if we do that effectively, which you know we have tried to do it in all the states."
Voters over 65 are among the most reliable members of Clinton's base, though exit polls out of Pennsylvania indicate Obama may be making inroads into this demographic.
On Tuesday Clinton won about 60 percent of voters 65 and over. In the Ohio primary six weeks earlier, nearly 75 percent of those voters went for Clinton. The senior vote was particularly important in Pennsylvania as exit polls show nearly 30 percent of the electorate was over 65. In most primary states to date, those voters make up about 15 percent of the electorate.
Obama made similar comments to CNN's Roland Martin earlier Wednesday.
"We have won the white-, blue-collar vote in a whole bunch of states ... and if we had a demographic problem in Pennsylvania, it was that it's an older state than a lot of states, and it is true that Sen. Clinton has some strong support among voters over 60," he said on Roland Martin's radio show.