Sarah Palin will most likely not run as long as Bachmann is in it. Bachmann needs to step down. Besides, governors and former governors have a much better chance to win the Presidency than reps in congress.
Bachmann is irrelevant to any decisions of Palin and won’t hurt Palin now that she has fallen by the wayside in the race. Bachmann numbers and following are so low right now that when Palin enters that just the natural surge of Palin support will finish off what’s left of Bachmann’s hopes for the nomination