Alaska Gov. Sarah Palin says she will resign from office July 26.
Her spokesman wouldn't say why Palin decided to step down, but the announcement stirred speculation that she would focus on a bid for the 2012 Republican nomination for president.
Spokesman Dave Murrow says Lt. Gov. Sean Parnell will be inaugurated at the governor's picnic in Fairbanks at the end of the month.
The former Republican vice presidential candidate made the announcement from her home in suburban Wasilla on Friday morning.
Palin was first elected in 2006 on a populist platform.