Keyserling's $30,000 outpaces the $10,000 spent by Rauch and $300 spent by White in the race for the city's top post.
With more than $40,000 in the Election Day till, campaign advertisements have become a common sight on the city's streets and airwaves and in newspapers.
Keyserling and Rauch have spent campaign dollars on television and radio spots, road signs and mailings, according to the candidates and their most recent campaign disclosure forms filed with the S.C. Ethics Commission on Oct. 10.
Keyserling and Rauch had raised and spent $25,000 and $7,000, respectively, when the financial statements were filed earlier this month. Both candidates say they've added more money to the campaign since then and have nearly depleted their resources.
White, on the other hand, hasn't solicited or accepted any campaign contributions.
"I think as long as people know you exist ... I don't think all the money is necessary," said White, whose road signs represent the only money he's spent on the campaign apart from a $250 candidate registration fee.
Expenses listed on Keyserling's disclosure form include $1,025 to the post office on Charles Street for mailings, $2,358 for a poll of city residents, and $1,000 to a campaign coordinator.
Rauch's expenses include $470 for a radio advertisement, $818 to the U.S. Postal Service and $1,350 to a copy shop.
Since the Oct. 10 filing, both Rauch and Keyserling have spent thousands on other campaign tools, such as television commercials, which will be reported in a disclosure form filed after Tuesday's election.
"It looks like (Keyserling) is running for governor with the amount of money he's spending," said White, who complains that all of the campaign signs are hiding the grass.
While both Keyserling and Rauch have a considerable number of signs placed throughout the city, it has been newspaper advertising that has consumed the largest portion of their campaign budgets.
Keyserling said more than $6,000 of his money has been spent on advertisements in area newspapers.
"We started early and we've had big ads because I've had a lot to say," said Keyserling, who considers it unusual for a candidate to spend that much money on newspaper ads.
Rauch too has spent a healthy portion of his bankroll, more than $3,000, on newspaper ads.
"It's all really just communicating your record," said Rauch, who enlists the support of his wife and children in producing television commercials and campaign signs.
But White believes campaigns should be about more than signs and ads, and hopes that attention from the local media and his appearances at candidate forums are will convince voters of his integrity and honesty.
"You need to convey your personality," said White, adding that he's gotten a lot of positive feedback from downtown residents on his positive campaign. "Signs and bumper stickers don't do that."
Many of the newspaper ads taken out in recent weeks by Keyserling and Rauch have featured criticisms of each other on issues ranging from taxes to an alternative road route through Beaufort neighborhoods.
Besides the advantage of money over White, Keyserling and Rauch have also enjoyed some star power in their campaigns.
Records show that author Pat Conroy and his wife, Sandra, contributed $500 toward Keyserling's campaign, while former New York City Mayor Ed Koch donated the same amount to Rauch.