Personally, I don't think either of them have the prerequisite experience for the offices that they have been nominated for.
Obama is a "first term" senator who hasn't even had the luxury/trauma/opportunity to be re-elected for a second term by his own constituents let alone the "national mob" of US voters. All he knows is that he wants to instigate "change"? Well, what the heck is that? AND.... how is he going to garner support to bring about his "change" NOW... when Americans need it the most. At best, Obama spends 4 years in "job training" and hopefully things don't deteriorate much further...
Palin, while she may be adequate for Alaskan needs (and I'm originally from Alaska so I know a bit about it's politics) she's been managing a huge piece of real estate with a very small population. Sure, theres a huge amount of Federal bureaucracy in AK but she's not interfacing to it directly... Not to mention that bringing the "Alaskan style" of political wrangling to WashDC isn't going to make her too many friends IMO... Telling someone to "suck my oosik" is just, well, baffling (at first)...