The California Secretary of State puts out a periodic summary of votes remaining to be processed:Wikipedia is not the most reliable source. Are there any other sites that confirm this?
http://www.sos.ca.gov/elections/c-status08/total_unprocessed_ballots08.pdf
At the moment, it shows 2,738,000-odd votes still remaining to be counted.... however, not all of these votes will be counted. According to the LA Times, the number includes ~1.9 million mail-in votes that arrived too late. It also includes ~700,000 provisional ballots: votes that were cast by people not on the official voters' list. Now, election officials are trying to determine whether the voters should have been on the list or not. Odds are that many will be deemed to have been cast by people ineligible to vote and therefore won't be included.