Voters in California have passed Proposition 8 by a narrow margin.

The proposition defines marriage as between a man and a woman and bans GLBT marriages, and invalidates existing marriages.

At 1:45am PST with 78% of precincts reporting, the yes vote had 52% of the vote, with a margin of over 300,000 votes. The vote has trended lower for yes throughout the evening as larger centers have been added to the tally, but the trend would appear not strong enough to change the result.

Opposition to Proposition 8 was strong in the tech community, with many leading companies financially backing the no campaign.