The Department of Elections says there are about 34,500 ballots still to be counted — 27,000 election-day absentees and 7,500 provisionals. That would be about one sixth of the total votes. Not enough to make a huge difference, but if they break the way the election-day votes did, the mayor’s race will get tighter (although probably not enough to make a difference) and Ross Mirkarimi will pull further away in the sheriff’s race. The only other difference: Prop. H may wind up losing — not that it matters, since it’s only a policy statement anyway and the school board is not about to change a system it developed over two years of public hearings.