Unions put teachers on streets — for votes - Stephanie Simon - POLITICO.com

The NEA has also developed more sophisticated data-mining tools to target specific voters outside union households.

The union’s database might indicate, for instance, that the adults at a given address are struggling financially and don’t have school-age kids. So rather than send a teacher to talk with those voters about reducing class sizes, the NEA might dispatch a school bus driver to talk about a favored candidate’s commitment to raising the minimum wage.