Voters in Wisconsin are advised by an election clerk to be wary of third-party mailers, highlighting the importance of official registration processes.

Voting begins today in Wisconsin – one of several battleground states likely to decide the election's outcome.

You can register to vote at your polling place on Election Day in Wisconsin. But you can get registered before that, including online.

The impact and energy of both campaigns' ground games are about to be put to the test. States are preparing to send out their mail-in ballots. Swing Left executive director Yasmin Radjv joins Chris Jansing to share more about her organization.