Do Women on Dating Sites Want Liberal Men?

Over at my new site, Helen’s Page, poster Jeremy has some questions about dating sites:

But this is an observation after using Okcupid futilely for a few years now. Pretty much every single women on the site is a liberal who doesn’t want to date conservatives. (They have a match question for this)

Even women who are Ayn Rand fans. Even women who are hard core Christians, anti-abortion, anti-sex before marriage, etc, etc, etc

The few exceptions are “centrists” who don’t want to date conservatives.

What gives? Is it just the web site? Are most women who lean conservative already married? Are women just more prone to be liberal?

Jeremy’s question is an interesting one. Do most women want liberal men? If so, why?