1. Embargo her air supply through erotic asphyxiation during vaginal intercourse.
2. Paddle her until she submits to calling you Mr. President.
3. Casually transition to anal.
4. Make her confess she'll give you her vote, in exchange for ass-to-mouth.
5. Veto the condom and put your commander in chief in her oval office.
6. Retire to your presidential bed and make her sleep on the futon in the grimy Lincoln bedroom.
I dropped a Benjamin to fly her down to the White House. It was worth it though, I gave her "The "Mr. President"".