I don’t trust any poll on this subject. There are those who will never give the “wrong” answer to a pollster to be seen as “open-minded”. Only when there is a secret ballot do we know what people really believe.
There will never be a secret ballot on this issue because the gay rights people are determined to use intimidation and harassment of anti-Gay Marriage people to push their agenda. The Gay rights people took the issue to court, demanding names and addresses of everyone who signed the defense of marriage initiative and won. The argument was that the Gay rights people swore that they would NEVER think of intimidating or harassing opponents.