ALBUQUERQUE, April 6 -- Mark J. Penn quit Sunday as Sen. Hillary Rodham Clinton's chief strategist, the second shake-up in her campaign's top ranks since the onetime front-runner for the Democratic presidential nomination began trailing Sen. Barack Obama (D-Ill.). -
Clinton's Chief Strategist Steps Down
ALBUQUERQUE, April 6 -- Mark J. Penn quit Sunday as Sen. Hillary Rodham Clinton's chief strategist, the second shake-up in her campaign's top ranks since the onetime front-runner for the Democratic presidential nomination began trailing Sen. Barack Obama (D-Ill.).-
By Anne E. Kornblut and Dan Balz