WASHINGTON - The campaign trail is heating up as Democrats attack the presumptive Republican nominee.
But infighting in the Democratic camp means the battle could continue through the end of primary season.
Obama Slams McCain on War Stance
On a tour touting his military heritage, John McCain is taking heat from Barack Obama over his stance on the war in Iraq.
"John McCain's policies are a continuation of George Bush's policies," Obama said. "John McCain has suggested that we might stay for decades, as long as 100 years, if that's what it took, in Iraq."
McCain called that a distortion of his record and hammered Obama for his lack of understanding on national security and warfare.
"I think the American people are smart enough to figure that out," McCain said. "They'll understand over time if they don't know, that he has no experience or background on these issues."
Hillary Clinton jumped on the attack, charging that McCain falls short of economic expertise.
"Senator McCain recently gave a speech. His plan is not to have a plan. If he got the 3:00 a.m. call on the economy, he would just let the phone ring and ring," Clinton said.
Clinton Rejects Calls to Withdraw
The Clinton machine fended off calls for her to drop out of the race, accusing Obama's campaign of trying to stop people from voting in the primaries.
"Hillary believes that this is a great thing, and every state ought to be able to vote. And when it's all done we should know who the nominee should be," said President Bill Clinton.
But new reports show the Clinton campaign is running low on funds.
The campaign is two months late paying health insurance premiums for staff. Clinton spokesmen say the bills have been paid and insurance went uninterrupted.
Obama Stumbles over the Life Issue
Obama is facing new scrutiny for comments about sex education, after he said that if his daughters made a mistake he wouldn't want them, "punished with a baby."
A spokesman told CBN News the candidate believes children are miracles and the country should agree on steps to cut teen pregnancies and abortions.
Meanwhile, the pro-life issue could be a stumbling block for McCain. Conservative Dr. James Dobson says he will now vote in November's election. But he's waiting for McCain to rescind his support for federal funding of embryonic stem cell research.
With McCain's head-start as the presumptive Republican nominee, top Democrats are hoping Clinton and Obama will quickly resolve the party battle, so they can focus on winning the race this November.