When she is asked about her experience as compared to Joe Biden she should simply say, that Joe's own party in Iowa was asked whether his 30 plus years in the senate was good enough to make him president material, and 99% said no.
Palin should say, Joe has been in the same chair for 30 years. When did he fight his party. When did he put his career on the line for change. Or was he the reason change is needed. If you can't get change in 30 years its time to look for some new faces.
If 4 years as a Senator is enough to qualify Baraq Obama (almost 4 years, at least in liberal years), then...
Does Joe Biden have 36 years of experience, or 4 years of experience 9 times? Other than more Meet The Press appearances, Beltway Joe has only a high-tech lynching in his resume.