2024 polling error in historical context (for key states):
1. Much better in most of Midwest NC vs. 16/20.
2. IA big exception. Along w/FL TX, worst polling misses over last 2 decades.
3. Same direction of error for ~every state for 3rd straight year--this is not normal.
If NYT estimates are correct, national polls would be off by 2.4 (compared to 538 averages) & swing state polls would be off 1.9 PA, 4.1 NV, 1.7 GA, 2.5 NC, 2.9 MI, 2.6 WI, & 2.6 AZ. That's not a large average error, though it is systematic in the same direction as 2016 & 2020.