A Mexican congressman who said all pretty women become prostitutes was asked by his party to give up his bid to run for the Senate on Friday.

Mexico's former ruling Institutional Revolutionary Party said in a statement that it won't tolerate discriminatory attitudes. It said party leaders asked Congressman Francisco Moreno Merino to drop his campaign for a Senate seat in July 1 elections.

The party, which held the presidency from 1929 to 2000, has been struggling to attract women voters. President Felipe Calderon's conservative National Action Party has nominated Josefina Vazquez Mota as its presidential candidate, the first woman to run for the presidency on a major-party ticket.

Moreno Merino's comments during a congressional session earlier this week didn't seem likely to help the PRI's efforts.

He trotted out what appeared to be a little-known folk saying about everyone having their defects: "There is no horse that doesn't have a bit of mule in him, there are no pretty women who don't become prostitutes, there is no good man who doesn't have a bit of uselessness in him."

A group of congresswoman quickly condemned the comments.

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