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Rahm could step down next month

From Chuck Todd and Savannah Guthrie
As we've previously reported, White House Chief of Staff Rahm Emanuel is considering departing his job, and sources tell NBC News that Emanuel MAY step down from his position as soon as October. The most logical period for Rahm to leave is right after Congress recesses, before the midterms.

There has been speculation that Emanuel will run for mayor of Chicago in 2011 (and he himself expressed interest in the office to Charlie Rose in an April interview), after current Mayor Richard Daley announced earlier this month he would not run for re-election.

What's more, there are legal reasons why Rahm would need to officially leave his federal appointee job to run. Federal law prohibits electioneering by federal government employees.

Nomination papers for the Chicago mayoral elections must be filed by Nov. 22, 2010.