Barack Obama has been the best thing that could have happened to the Republican Party in general.

Now, it seems, he has been the one thing that could propel Sarah Palin into the role as a credible candidate for president.

But then a funny thing happened: In November, Mrs. Palin debuted her memoir “Going Rogue” with great sales, which was not a surprise, but also with a luminous and successful press tour, which was. The interviews she gave in promotion for her book (at least the ones that I saw) were much improved from those given during the 2008 presidential campaign. Palin seemed to speak about both herself and national issues with greater verve and confidence.

Other stars are aligning for Palin:

Several of her potential rivals for the 2012 Republican nomination find themselves suddenly, perhaps fatally, compromised by recent events.

Read it all.

Certainly the whole issue of “not ready for prime time” will have been eliminated by next year as it becomes painfully clear to the entire world that we just had a president who was not even ready for daytime soap commercials or Saturday morning cartoons.

Sarah does not have a very high bar to climb. From all appearances, she is exceeding the bar by a long shot.