Bible believers are free to vote their biblical values. Many who fund anti-gay marriage initiatives and who vote to keep same-gender loving persons as second class citizens often use the bible as their justification to do unto gays as they would never want anyone to do unto them.
I assume those who use the bible to justify their heterosexism have sold all their possessions and given all the proceeds to the poor (Mark 10.21).
I also assume all the women who voted against gay marriage because of their biblical faith never teach sunday school, sing in church choirs, pray in public, preach, or otherwise break silence in church (1 Corinthians 14.34).
I certainly hope NONE of the righteous voters are tatooed (Leviticus 19.28), and I would bet that every single one observes the Jewish Sabbath from sundown Friday to sundown Saturday as is COMMANDED in the precious Ten Commandments (Exodus 20.8).
And, being the good biblical literalists they are, I'm sure they've worked out somehow which of the two contradictory creation narratives (Genesis 1.1 - 2.4 and Genesis 2.5 ff) they take at face value. I'm sure they believe slaves should obey their masters and men can have multiple wives and children can be beaten and that it is very difficult for the wealthy to "enter the kingdom of heaven)...bearing in mind that almost everyone in the US is wealthier than most everyone else on the planet.
As long as they are consistent with their biblical literalism and biblically excused fears and hatreds, I'm OK with it all...oh, wait...maybe hatred is hatred and no amount of proof-texting can make it less ugly than it is. OK, i'm back. Let's fix this mess and demand equality for everyone.