Measure B makes comeback - now passing

It's taking thousands of provisional ballots to do it, but Santa Clara County's Measure B has now passed the two-thirds threshold that is required for it to pass. The current tally with 9,800 ballots remaining to be counted:

Yes - 407,932 (66.67%)
No - 203,954 (33.33%)

The margin here is 24 votes, which translates into a true difference of only 9 votes. Or rather, if 9 more voters had voted No instead of Yes, the measure would be losing. I'm starting to wonder what the fate is of my brother's absentee ballot, which may have been rejected because he accidentally circled one of the arrows instead of drawing the line connecting an arrow. Talk about too close to call.