Although most of the exciting propositions this calendar year will be on the ballot in November, two will be on the June primary ballot. In fact, they are already on that ballot and absentee ballots have been mailed. One is a tobacco tax earmarked for cancer research. While that sounds like a sure thing to pass since smokers are a decreasing minority and no one favors cancer, tobacco companies are putting major bucks in a campaign against the proposition (Prop 29). They don't think it's a sure thing to pass. Dueling TV ads can be seen below. Tobacco companies have had some successes in California in the legislature and regarding ballot propositions in the past.
In any event, it the tobacco tax fails in June, that failure will be taken as a sign of anti-tax sentiment. The June primary is the presidential primary. Democrats have no real choice or controversy about their presidential candidate. Romney has essentially won the GOP nomination but conservatives who preferred other candidates might show up to cast protest votes. The voter profile in June could be different from the voter profile in November.
Brown has not endorsed Prop 29 – the tobacco tax – perhaps because if it fails he doesn’t want to be identified with it. He did remove the doc who appears in the ad below from a state panel. See:
Here are the TV ads against and for Prop 20:
No on Prop 29
Yes on Prop 29
And then there is: