Update - Caledonia man says he regrets what he did to Obama volunteer.

CALEDONIA — A husband and wife are dealing with emotions of regret and embarrassment, after the husband pulled the hair of an Obama campaign worker during an altercation outside their house Saturday afternoon.

Ronald Goetsch, 71, confirmed on Sunday afternoon that he was the man who pulled the hair of canvasser Nancy Takehara, 58, of Chicago, when the two had a heated verbal exchange on Saturday. The exchange was over alleged voter improprieties in other states and the role of voter registration groups in those situations, Goetsch said.

On Saturday night in a telephone interview with WISN television, Takehara said "he (Goetsch) grabbed me by the back of the neck. I thought he was going to rip my hair out of my head. He was pounding on my head and screaming."

Goetsch said he did pull the woman's hair, but denies hitting or slapping her. Takehara did not seek medical attention at the scene of the incident, Caledonia police said in a Saturday press release.

Police said the incident remains under investigation and a report, upon completion, will be forwarded to the Racine County District Attorney's office for consideration of possible charges. Goetsch had not been arrested as of Sunday.

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On Sunday, the Obama campaign released the following statement:

"Last night's unfortunate incident in Caledonia was isolated and extremely rare, and we are grateful our volunteer is doing well," said Phil Walczak, Wisconsin communications director for Obama For America. "Thousands of Wisconsinites welcome our canvassers at the doors each and every day and whether or not they support Barack Obama. There is an overwhelming desire across the state to have a dialogue about how to bring our country forward."

Bill Folk, chairman of the Republican Party of Racine County, also issued a statement that condemned campaign violence and vandalism in general.