#New PA cong. map increases D chance of winning the House majority by 4%. They only need a 6.8% generic ballot margin now (down from 7.7) to be favored.
Diff. will be closer to 10% in Nov when uncertainty from polls is ⬇️. Redraw is a very big deal.
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by @gelliottmorris view original on Twitter
One major reason the new PA map is such a big gain for Democrats is that it solidifies, not just tips, PA districts in Philly burbs. Also creates one additional vulnerable R district. (Easily seen in this map made by @JMilesColeman)
My forecasting model will have new PA map in the near future. This is not just a simple switch; it’s a coding redesign, restructuring of input, & drawing new geographic files. Takes a while (for me, a student).
I will have a blog post explaining the new PA House map (and what it means for 2018) very soon. Until then, you can find all my comments from today in the following two threads:
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Now I’m going to eat dinner and go offline. Bye.
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This is the right take (if I’m reading it correctly), but let’s talk about that article claiming the Democratic wave is receding (nymag.com/daily/intellig…). Oh boy...
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Best evidence of REAL change in the wave is in actual voter behavior. If Democrats stop posting gains in special elections over time, they should worry more. Of course, they haven’t (yet?). These claims are almost all based on declining D margin in the generic ballot, which...
... is mostly an artifact of how wide you take your averages. Monthly Democratic margin in generic ballot polling has been between 7 and 9 percentage points since October of 2017. Combine with special elections, the wave looks nearly as tall as it did in March.
There are TWELVE special elections tonight! One high profile election in #AZ08, a Trump +21 congressional district, and eleven (11!) in New York, where two R seats are competitive possible flips.
Coverage to follow here. <THREAD>
With results being dumped in for #NYSpecialElections, we have our first calls of the night… 3 holds for the Democrats.
NY #SD32: D hold (Clinton +88)
NY #HD74: D hold (Clinton +74)
NY #HD80: D hold (Clinton +66)
Democrats also hold NY #HD39 (uncontested) which Clinton won by 66 points in 2015. They are batting 4/11 tonight.
27% in now. Unclear if Lamb can pull this off. He’s running out of votes in Allegheny
Not sure if anyone else is seeing this or my data is messed up, but pretty interesting nugget — seems like Clinton precincts are voting a little worse for Lamb than her, but turning out much more. R precincts going more for Saccone than Trump, but voting far less.
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Before 8PM rolls around, I want to cover what the data say to expect in this contest. This thread will start off running through my predictions, will cover how I’m projecting the race, and will turn into a live blog with graphics when the votes start to come in.
There are multiple ways to predict an election. Polls, geographic data, demographic data, etc are all useful. I’m going to run through what all these measurements could predict in #pa18. Spoiler: it’s a mixed bag for both Lamb and Saccone.
New #PA Congressional map is pretty much the best one Democrats could have hoped for. At least 2 pickups in neutral environment, likely ability to win 11 in current D+6 environment. Post coming
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by @nate_cohn view original on Twitter
PA redraw creates map that is almost entirely drawn from scratch. Huge shifts from 2016 plan all over the place. Dems favored to win 9 seats there in almost any national environment.
(big swings mostly from renumbering, but aggregate differences are clear)