The low undecideds is what gave the polls such consistency in 2020 (and in contrast to how volatile they were in 2016). When you are on top you want consistent polls. When you are the underdog you are hoping for lots of undecideds to maybe you turn things around.
May tomorrow be the dawn of a blue revolution.
In 2016 it was NH, MI, WI, and PA (all under 1% margin).
Right now the prediction market is calling the top 3 as PA, OH, and FL although tied with only 13% chance each (at the time of this post). The fact that there is no clear frontrunner and nobody over 13% is another way of saying nobody knows for sure.
What are your thoughts?