While all those political folks are debating what it would take for Sarah Palin to run for the presidency in 2012, my entertainment sources are telling me the answer is much more simple. If Bristol wins 'Dancing With the Stars,' Sarah is in for sure.

"Sarah ultimately wants to win if she runs again; she's not interested in running to increase her popularity or visibility. She will only run if she thinks she can win," a friend of Bristol's tells me. "And the best barometer at the moment is Bristol's success on 'Dancing With the Stars.' If Bristol can get enough votes to win the mirror ball trophy, Sarah is convinced she can get enough votes to send her to the White House."