Those early numbers about late deciders have held up as the exit poll sample has gotten bigger and more representative — 63 percent of voters made up their mind this month, while comparable timeframes in previous years had far lower shares. This suggests that primary voters really are surprisingly undecided this year.
When they chose: How 2020 primary voters compare to past years
Breakdown of New Hampshire Democratic primary voters by when they decided who to vote for in 2020 and recent presidential election cycles, according to preliminary exit poll data
| When did you decide? | 2000 | 2004 | 2008 | 2016 | 2020 |
|---|---|---|---|---|---|
| In the past week or so | 48% | 54% | 48% | 31% | 63% |
| Earlier than that | 52 | 45 | 51 | 68 | 36 |