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There's growing speculation in Alaska that Governor Sarah Palin won't run for reelection in 2010. Politico reports that top Republicans and Democrats are quietly lining up to run for the office — should Palin decide not to.

No one has filed the official paperwork yet; but many are taking the governor’s silence as a sign that she’ll opt out of a second term in order to get more involved in national politics.

One politician who is weighing a run put it this way: "If you’re Palin, once you've flown first class, you don't go back to coach. She's been to the show and certainly seemed to like it there."

He suggests that barring some "unforeseen collapse on the national stage," Palin won't run again for governor.

Some experts expect the governor to wait as long as possible before announcing her plans — that way she can keep her options open and minimize her lame duck status as governor if she decides not to run again.

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