A Florida state chairman for McCain was arrested Wednesday.
(CNN) – A day after four of Sen. John McCain's top political strategists stepped down, the Arizona Republican's presidential campaign was dealt another setback when the co-chairman of his Florida campaign was arrested Wednesday for allegedly offering an undercover police officer money for a sex act, Titusville police said.
Florida State Rep. Bob Allen faces charges of solicitation for prostitution after he was arrested in a Titusville city park that had been under surveillance, police said.
He allegedly offered an undercover police officer $20 for the unspecified act.
Allen told CNN affiliate WFTV the incident was "a very big misunderstanding."
"This is a very gross mistake, a very big mistake," he said, adding that this is what the judicial system is for.
Allen said he helped build the park, and was there looking around.
There was no initial comment from the McCain campaign.
In March, the McCain campaign issued a news release on its Florida leadership team, saying, "Allen will serve as a House co-chair for Senator McCain's campaign."
Allen was elected to the Florida House in 2000.
His arrest comes a day after McCain's campaign manager Terry Nelson and chief strategist John Weaver announced their departures in joint statements released by the campaign.
Vitter, a Louisiana Republican, said in a statement, "This was a very serious sin in my past for which I am, of course, completely responsible. Several years ago, I asked for and received forgiveness from God and from my wife in confession and marriage counseling."
It was the second blow for Giuliani's campaign. Last month, South Carolina Treasurer Thomas Ravenel, the state chairman for Giuliani's campaign, was indicted on federal cocaine charges.
- CNN Political Desk Managing Editor Steve Brusk
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