A group of education and Democratic political leaders are urging Molly Munger to reconsider her campaign tactics, saying she could bring down Gov. Jerry Brown’s tax proposal on the November ballot.

Backers of Proposition 30, Brown’s plan to temporarily hike levies on upper incomes and state sales, sent a letter to Molly Munger on Monday urging her to reconsider her plans to draw sharp comparisons between her tax plan, Proposition 38, and the one pushed by Brown.

“If you launch these Prop. 30 comparison attack ads, you will be the second Munger spending millions against our students and schools,” the letter states. “In the end, the Munger family could be known as the millionaires who destroyed California’s schools and university.”

Munger has invested $31 million of her own money for the Yes on 38 campaign. Her brother, Charles Munger Jr., has dumped $22 million into a committee aimed directly at taking down the governor’s tax-hike plan.

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