Alaska Gov. Sarah Palin abruptly announced Friday she is resigning from office at the end of the month, a shocking move that rattled the Republican party but left open the possibility she would seek a run for the White House in 2012.

Palin, 45, and her staff kept her future plans shrouded in mystery, and it was unclear if the controversial hockey mom would quietly return to private life or begin laying the foundation for a presidential bid.

Palin's spokesman, David Murrow, said the governor didn't say anything to him about this being her "political finale." He said he interpreted Palin's comment about working outside government as reflecting her current job only.

"She's looking forward to serving the public outside the governor's chair," he said.

And Pam Pryor, a spokeswoman for Palin's political action committee SarahPAC, said the group continues to accept donations on its Web site, with an uptick in funds after Palin's announcement.

The announcement caught even current and former Palin advisers by surprise. Former members of the John McCain campaign team, now dispersed across the country, traded perplexed e-mails and phone calls.

But personal pressures have been mounting

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