In an election which included high turn out of Dems:

Florida, California voters approve gay-marriage bans
" A ban on gay marriage, which is already illegal in Florida, looks like it will be enshrined in the state Constitution.

The Florida Marriage Protection Amendment is one of four constitutional changes that appeared headed for approval with 95 percent of statewide precincts reporting. The others are tax breaks for land conservation, working waterfronts and homeowners who install hurricane shutters or solar panels."
...
The measure was leading with 62 percent of the vote.

California voters also appeared likely to return to their state constitution a prohibition on same sex marriage."
http://www.miamiherald.com/news/politics/AP/story/757853.html

From article Don linked:
"The platform calls for a constitutional ban on gay marriage, an issue McCain says should be left to individual states. Similarly, the platform seeks a constitutional ban on all abortions; again, McCain supports allowing states to decide the question. McCain supports research using embryonic stem cells, which the platform opposes."