[Zhang Fei]

Suppose Palin intends to run for president. How does unnecessarily preempting McCain’s support help her campaign? If any bridge is to be burned, let McCain do it. He will be the one who comes off as small, considering Palin’s generosity towards him.

Precisely. She has conservatives eating out of her hand. To win the moderates, she needs McCain's endorsement or at least his non-endorsement of her opponents.

[dforest]

Palin is not going to run for President in 2016. Face it. She may run for the Senate in Arizona.