If you live in California: vote for anybody who is not Gray Davis.

If you live in San Francisco: vote NO on propositions D (public power), L (real estate tax increase), O (Tom Ammiano wasteful handouts to homeless)
vote YES on K (restore competition in public notice ads), N (Gavin Newsom sensible homeless initiative), R (home ownership for renters)

And regarding your local race for the House of Representatives. If you vote for your local Democrat your are also voting to help Nancy Pelosi become Speaker of the House. Vote Democrat only if you want Nancy to be Speaker.