JUDY WOODRUFF: Ohio unions have split their endorsements between Clinton and Obama, and some have chosen not to endorse at all. Polls show Clinton has a large lead among union households, but that's not slowing down the pro-Obama unions.UNION MEMBER (singing): We're going to make history...
GROUP OF UNION MEMBERS (singing): We're going to make history...
UNION MEMBER (singing): ... and put Obama in the seat.
GROUP OF UNION MEMBERS (singing): ... and put Obama in the seat.
JUDY WOODRUFF: In downtown Cleveland, members of the Service Employees International Union prepare to hit the streets for their man.
Nursing home aide and mother of three Samara Knight.
SAMARA KNIGHT, Obama Supporter: Health care is a big concern for me because I don't have health care. And I think everybody, every American, everybody, whether you work or you don't work, I believe should be entitled to have health care.
JUDY WOODRUFF: And what is Senator Obama saying about those things that appeal to you?
SAMARA KNIGHT: I like his plan for health care. I like how he wants to make it universal. I also like how he wants the parents to have responsibility for their kids having health care until the age of 25.
He says, I believe if you're going to school, if you're in college, I don't believe you should have to worry about health care.
JUDY WOODRUFF: But even with her enthusiasm, Knight, like AFSCME's Gina Knapp, finds many union members either not at home or a hard sell.
SAMARA KNIGHT: That's OK. We urge you to change your mind.
JUDY WOODRUFF: Polls show that jobs, health care and the Iraq war are the motivating issues for voters. At the West Side Market in Cleveland, butcher Vince Bertonaschi often votes Republican, but not this time.
VINCE BERTONASCHI, Butcher: I can't go with McCain because he said if it takes 100 years to do this in Iraq -- I don't like our soldiers walking around with a bull's eye on them.
JUDY WOODRUFF: So you're looking at the Democratic primary. So what do you think of the two candidates who are still in there?
VINCE BERTONASCHI: Actually, I'm not thrilled with anybody running now, Republican or Democrat, but I think that I would have to go with Hillary Clinton over Obama because I don't think he's got enough -- I don't think a couple years in the Senate is enough experience.
JUDY WOODRUFF: Baker Michelle Vigh says she's voting for Obama because she thinks he has the best plan to create new jobs.
MICHELLE VIGH, Baker: The economy here is poor. There's been so many factory jobs and manufacturing that has left here. And people have left. Half the population of Cleveland has gone elsewhere because there's just no employment.
JUDY WOODRUFF: Obama is outspending Clinton in television and radio advertising, but both stress why they'd be better on this issue that is uppermost in the minds of Ohio Democrats.
SEN. BARACK OBAMA (D), Illinois: We can say to the companies, "We're taking away your tax breaks if you ship jobs overseas. We're going to give those tax breaks to companies that invest right here in Ohio."
JUDY WOODRUFF: At Talan Products, a small manufacturing plant, Obama's advantage with male voters showed up and there were echoes of the Illinois senator's television ads.
TONY ARCHIBALD, Ohio Voter: He's concerned about our jobs, concerned about our jobs going to overseas, and the NAFTA trade agreement, we need to have the money invested here.
NATE MOORE, Ohio Voter: I like the fact that he's going to start taxing companies that take jobs out of the states and put them overseas. I like the fact that he's going to give us a tax break for keeping jobs in this area.
JUDY WOODRUFF: Clinton has been running ads with the very same message.
CLINTON AD NARRATOR: She'll get tough on unfair trade deals and end tax breaks to companies that ship jobs overseas.
SEN. HILLARY CLINTON (D), New York: Standing up for people who weren't getting a fair shake, that's been the purpose of my life, and it will be the purpose of my presidency.
JUDY WOODRUFF: That resonates with this former Ford engine plant worker.
STEPHEN MCCONNELL, Clinton Supporter: We need the federal government to back us, because right now we've had this Bush administration that has done nothing but back corporate America. We need a president that's going to back not just union America, but working America, and I think Hillary's the best choice.