Martin Schneider writes:

A few quick thoughts, in no particular order:

She's seen her last presidential ticket.

I don't think there's a scandal brewing.

Assuming she does not seek political office, her decision and her statement reflects more poorly on John McCain than it does on Palin herself.

For all the talk of how much liberals despise her, let's remember that her only triumph as a national political figure came when she boasted at length about her ability to attack those loathsome Democrats.

I have a hunch she'll change her mind and serve out her term.

There's been a lot of talk about Todd Purdum's Vanity Fair profile of Palin, but it's also an excellent moment to revisit Philip Gourevitch's article about her from last autumn.