At the end of our last wave of post-debate battleground polls, there were two state poll results that didn’t seem to fit the rest.
One was Pennsylvania: Kamala Harris led by four percentage points, making it her best result in the battlegrounds. It was our only state poll conducted immediately after the debate, when her supporters might have been especially excited to respond to a poll.
The other was Arizona: Donald J. Trump led by five points, making it his best result among the battlegrounds. Even stranger, it was a huge swing from our previous poll of the state, which Vice President Harris had led by five points.