As of October 26, early voting in 12 key battleground states surpassed 6 million. This includes over 1.6 million in Florida, nearly 700,000 in Georgia and Ohio, and 650,000 in North Carolina. 

As of today's update, more Democratic-affiliated voters have cast ballots in Colorado, Iowa, Michigan, North Carolina, Nevada, Ohio, Virginia and Wisconsin. In Arizona, Georgia, and Pennsylvania, more Republican-affiliated voters have cast ballots. 

In Florida, an equal proportion of Democratic-affiliated and Republican-affiliated voters have cast early ballots so far. 

Throughout Election Night, a team of survey research analysts will be crunching the numbers on who voted, what issues were on their minds and why they voted the way they did.

The team includes Stephanie Psyllos, manager of exit polling, NBC News; Scott Keeter, senior survey advisor at Pew Research Center; Courtney Kennedy, director of survey research at Pew Research Center; Cary Funk, associate director of research at Pew Research Center; Patrick Murray, director of the Monmouth University Polling Institute; Maureen Michaels, president of Michaels Opinion Research Inc.; Mara Ostfeld, postdoctoral fellow, Ford School of Public Policy at the University of Michigan; Patrick Egan, associate professor of politics and public policy at New York University; Hannah Hartig, assistant director, University of Pennsylvania's Program on Opinion Research and Election Studies; Jennifer Su, senior project director, Princeton Survey Research Associates International; and Andrew Arenge, assistant producer, NBC News. The NBC News Exit Poll Desk works closely with digital editors David Taintor and Elizabeth Johnstone to curate the stories we produce.