"When we find supporters, sometimes they'll say 'I didn't know there were any Democrats in Warren County,'" she said. "They feel isolated, and they're happy to see us."
The campaign has been subjected to apparent pranks — some people showed up at the Mason office saying they got phone calls telling them they should go there to sign anti-Obama petitions. And, about 10 miles up US-42, workers at the Warren County Democratic Party office in Lebanon arrived one recent morning to find someone had dumped a load of horse manure in their parking lot.
"I felt like Dorothy in the Land of Oz," volunteer Libby Rupp, a Democrat, recalled about moving here from Maryland a decade ago.
They know their work is uphill — the Romney campaign showed its muscle Oct. 13 when it reported supporters knocked on 15,000 doors before Romney arrived in Lebanon for an afternoon rally. The Romney campaign predicts it will return Warren to '04 margins, when Bush won 72 percent of the vote.
Working from lists of people who have voted in a Democratic primary in the past or whose party affiliation is unknown, Herman knocked on dozens of doors on a fall afternoon. At one, no one answered, but barking dogs were let out to charge the fence.
Finally, she hit pay dirt in an upscale golf-course community.
Jennifer Harp, a mother of three who works in the finance industry, said she thinks Obama will do more to help the many economically struggling people in the country.
"I just don't approve of Romney," she said, admitting her husband and most neighbors disagree with her. "I'm in the minority in this neighborhood."
She got a warm handshake and thanks from Herman, a 57-year-old massage therapist and social worker, who made sure Harp had information on how to vote early.
"I like the challenge," Herman said, then headed off to her next address.
Associated Press writers Nicholas Riccardi in Denver and Kantele Franko in Youngstown, Ohio, contributed to this report.
Contact Dan Sewell at http://www.twitter.com/dansewell
Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.