A Republican congressman accused of abusing his ex-mistress agreed to pay her about $500,000 in a settlement last year that contained a powerful incentive for her to keep quiet until after Election Day, a person familiar with the terms of the deal told The Associated Press.

Rep. Don Sherwood is locked in a tight re-election race against a Democratic opponent who has seized on the four-term congressman's relationship with the woman. While Sherwood acknowledged the woman was his mistress, he denied abusing her and said that he had settled her $5.5 million lawsuit on confidential terms.

The settlement, reached in November 2005, called for Cynthia Ore to be paid in installments, according to a person who spoke on condition of anonymity because the deal is confidential. She has received less than half the money so far, and will not get the rest until after the Nov. 7 election, the person said Thursday.

The president of the National Association of Evangelicals, an outspoken opponent of gay marriage, has given up his post while a church panel investigates allegations he paid a man for sex.

The Rev. Ted Haggard resigned as president of the 30 million-member association Thursday after being accused of paying the man for monthly trysts over the past three years.

Haggard, a married father of five, denied the allegations, but also stepped aside as head of his 14,000-member New Life Church pending an investigation.