The cultural war over gay marriage has suddenly re-emerged nationally, setting the stage for volatile political developments in California when the Prop. 8 decision comes down between now and June.

Last Friday’s decision by the Iowa Supreme Court that found unconstitutional a state ban on same-sex marriage was followed within days by enactment of a pro-gay marriage law in Vermont and passage of another in the District of Columbia. All this could push the issue directly before Congress, as similar measures move ahead in New York and other states.

The flurry of activity triggered an all-hands-alert among religious foes of gay marriage, led by an outfit called the National Organization for Marriage, which rushed to air in California and other key states a dubious TV spot that uses paid actors to mouth lines of supposedly real people whose purported lives are about to be allegedly disrupted by “The Gathering Storm.” (And for a good spoof of the ad, try this.)

Foes of Prop. 8 meanwhile are sniffing defeat in court and planning mass demonstrations if the California Supremes uphold the initiative ban on gay marriage passed last November. The court has until June 3 to issue its ruling.

All of which complicates the lives of the candidates for governor. After months of mouthing platitudes about the green economy, as all-recession-all-the-time stories blanketed the news cycle, wannabes now face the unpleasant prospect of getting whipsawed between two highly motivated enemy camps: ardent progressive and gay activists demanding civil rights for all versus impassioned conservative evangelicals and other churched groups, fiercely intent on protecting their most sacred values from doom.

Read how the issue affects the governor’s race at www.calbuzz.com

Google has issued its support for several cases challenging California’s Proposition 8, a ballot initiative that banned gay marriage in the state.

“Denying employees basic rights isn’t right, and it isn’t good for businesses,” Google wrote in a blog post. “We are committed to preserving fundamental rights for every one of the people who work hard to make Google a success.”

In May, the California Supreme Court struck down a state ban on gay marriage. Proposition 8, included as a ballot initiative during the November general election, reversed that decision. Since then, a number of groups and individuals have filed lawsuits, claiming Proposition 8 is unconstitutional.

 See Google Amicus Brief Challenges Calif.’s Prop 8 PC Magazine