Historically, my husband and I have always voted and cancelled each others votes.
This year, I might actually consider voting Romney. Although I'm registered D, I'm really pretty conservative on most issues. I'm a flaming liberal when it comes to social issues, though. Women's rights, gay rights, that would be what keeps me from voting for Romney.
Hard to say at this point... I think it's likely Obama will ditch Biden and bring in Hillary during the convention. Too early, still, for me to decide.