An article in the recent issue of Education Week suggests that there is support for vouchers among Democrats at the state and local level.
The article cites Newark Mayor Cory Booker, but he is an outlier.
It also quotes the head of a group called the American Federation for Children. This group attracts support for vouchers from very wealthy Republicans. It is headed by Betsy DeVos, a very conservative Republican advocate for vouchers and privatization. Last year, AFS honored Wisconsin Governor Scott Walker and Michelle Rhee. The AFS might is hardly a barometer of opinion in the Democratic party.
The article is indicative of the fact that groups on the right are giving money to Democratic candidates in order to buy off opposition to their privatization campaign.