It's about where I was expecting for Biden.
For a couple of sanity checks on the sample.
420 respondents, MOE +/- 5.3%
Same sample has Eastman trailing Bacon by 2 points. That's almost exactly where they ended up in 2018. I expect Eastman to do better this time around, because she has been working it since the loss in 2018, its a presidential cycle, and she is much better funded. But Bacon is also more established and funded.
The last section indicates 2016 voting pattern: 39% Trump, 35% Clinton, 10% other, 14% didn't vote. In 2016, it went 48/46 Trump. So, the sample is slightly more Trump heavy, and definitely more "other" heavy, than what happened in the District.
One advantage Biden has with Eastman running is turnout. She is a progressive, and is pushing M4A. Progressive/socialists aren't staying home in NE-2. Maybe they will write in Bernie or Warren, but they are showing up.