Ten polls in the past two weeks show Hillary Clinton maintaining a double-digit lead over Bernie Sanders in New York. With our model set to Sanders winning 80% of the undecided vote, we predict Clinton will win the New York primary with around 55 percent of the vote.
It will likely take weeks to get the final delegate count, in part because New York is proportional by Congressional district, and the district maps in the city cross all kinds of political boundaries. In CDs that have six delegates available (18 of 27), a candidate needs to exceed 58% of the vote to avoid splitting the delegates 3-3. This likely helps Sanders by around 10 delegates statewide.
Since we don’t have CD-level polling, and our model doesn’t account for demographics in any meaningful way, it’s not possible to drill down into how each of the 27 CDs may split. Nevertheless, our estimate shows Clinton netting roughly 25 delegates in the night, which would extend her pledged-delegate lead over Sanders to around 240. The win is what will set the narrative for the remaining races, but a 20+ Clinton delegate victory will come close to sealing the deal.
Our model shows Clinton netting an addition 42 delegates in the April 26 contests, mostly on the strength of an 18-point win in Maryland and a 6-point win in Pennsylvania, based on recent polls. Even were she just to net 30, she would have a 270-delegate lead. While not mathematically impossible to overcome until June 7, Sanders would need to post 50-point victories in each of the remaining contests to work the race to a tie. He will likely do so in Oregon, but in California, our model predicts a 4-point Clinton win, meaning Sanders has a lot of ground to make up in the next two months.
The “good” news for Sanders, though, is that the polls also show him keeping Clinton around 200 delegates short of what she needs to win the nomination on pledged delegates alone. It’s very likely that she has the super delegates needed to carry her over on the first ballot, but without Clinton hitting the 2,383 magic number in the primaries, Sanders can legitimately fight through the convention.