As we told you a few weeks back, California’s unions are very worried about Proposition 32, which — if passed — would kneecap their political power. The measure would limit labor’s chief weapon for influencing the state’s politics – political donations – by preventing unions from using automatic payroll deductions from members without their permission. It would also prevent corporations from doing the same, but as we noted in our story a while back — they’ve got some serious loopholes. So that explains why the the 325,000-member California Teachers Association/Issues PAC dropped $7.5 miiiiiiiiiiiiiiiiiiiiiilllion Friday in opposition to the measure,...