Proud Voter

From their website:

The Proud Voter Challenge is a non-partisan coalition of Tennessee individuals, community groups and organizations supporting citizens through voter registration and voter turnout initiatives so that they are represented and heard.
We partner with organizations to pursue the nearly 750,000 unregistered minority, single women, and under 30 year olds who are missing out on the opportunity to shape the policies affecting their lives.

Follow them on social media, too:
Facebook  @CivicTN