Palin is a right choice. rommney might have more experience, but Palin has got the charisma to charm the americans.
Palin is there to entrench the Republican's traditional stronghold. Gun-slinging, tabacco-chewing, conservative White America. McCain's gotta go after the swing vote, coz Palin's too one-dimensional. She's not gonna charm anyone outside that demographic.
Other than for this demographic pull, I don't see Palin's having real credentials for the VP post. If the Republicans win, there is a possibility of McCain going out of duty (sick/death/whatever), leaving Palin as the Commander-in-Chief.
*shudder*