Nobody can win the soul of the party because the party has no real soul. There are no real core principles to which the party ascribes either currently or historically. This is the nature of the Democratic Party.
A Marcy Winograd win over Jane Harman, akin to Congressional upstart Joe Sestak's win over three decade incumbent Arlen Specter, would further advance the push for change and an end to entitled incumbents.
"Only one team has an economic plan based on the middle class, with a plan for creating jobs at home, comprehensive health care for all Americans, a long-term energy plan, a plan for investment in education, and for ending the war."