Actually 3 who had not decided. 
The DA system works this way per the Supreme Court  (with Scalia and Thomas voting for it).
If you really want to point fingers,  look no further than George Brauchler who did more to tick off those 3 jurors than did his honorable and professional deputies. 
BTW: how do you know what any juror's political affiliation is?
And admit,here and now, that you could not have been a fair and impartial juror in this case.