Rep. Jane Harman, D-Calif. on Capitol Hill in Washington, March 2010.
From NBC's Andrea Mitchell
NBC News has learned that Rep. Jane Harman, D-Calif., is expected to announce tomorrow that she will quit Congress to become the president and CEO of the Woodrow Wilson Center in Washington.
Harman will succeed the current leader, former Rep. Lee Hamilton, who has led the bipartisan think tank for 12 years.
Her California district is reliably Democratic. A special election will have to be called to replace her.
*** UPDATE *** NBC's Shawna Thomas reports that Harman's departure comes as a surprise to rank-and-file Democrats, as well as to their leader in the House. A source confirms that Democratic Leader Nancy Pelosi didn't know about Harman's intention until she was informed today.