JEFFERSON CITY, Mo. – The Missouri Farm Bureau is reconsidering its endorsement of Republican Rep. Todd Akin for U.S. Senate because of comments he made about women being able to thwart pregnancy in cases of "legitimate rape," an organization spokesman said Friday.

The move to reconsider an endorsement is unprecedented for the Missouri Farm Bureau, whose political action committee endorsed Akin over Democratic Sen. Claire McCaskill by a 99 percent vote just three weeks ago.

"After polling the Missouri Farm Bureau county leaders, a majority believe the endorsement of Todd Akin for U.S. Senate should be reconsidered," said Farm Bureau spokesman Estil Fretwell, an adviser to the group's political arm.