American Civil Liberties Union

(Originally posted on the Washington Posts's On Faith blog.)

Near San Francisco's gay center, past the hill where Castro becomes Divisadero Street, a portable sidewalk sign points to City Church. That's where evangelical Christians gather every Sunday for worship in a converted theater. They are true believers: Jesus saves, Satan is real, sex is for the married and marriage is for the straight.

I didn't think a market for such beliefs existed in San Francisco, but hundreds of people and a full balcony proved me wrong. There were back-to-back services the day I attended. The congregants looked no different than the employees I saw on a visit to Google's Bay Area campus. These evangelicals wore Skechers, watched hulu, twittered and composted. They were high-tech professionals in their 20s and 30s who were mostly pro-life and partook of the body of Christ each Sunday. Many even voted Democrat because, abortion aside, it was the party they said that focused most on what mattered to Jesus — the poor, sick and environment. Same-sex marriage wasn't a factor because Barack Obama was against it.

I visited City Church because I wanted to see who in San Francisco might have voted for Proposition 8, which banned gay and lesbian couples from marrying in California. Nearly a quarter of San Francisco voters favored the ban, and that surprised me. Sure, the Bay Area overwhelmingly supported gays marrying, but in Silicon Valley — home to Google, YouTube, iPhone and a number of churches like City Church — 44 percent of voters didn't.

Alabama has the highest percentage of evangelicals, but by sheer size California has the greatest number: Two million, according to the Christian research firm Barna Group. The votes over marriage in California last year totaled 13 million and gays lost by 52 to 48 percent. That means any fraction of evangelicals changing their mind in the next, close election could make a difference.