"That remains our outlook today in our final forecast of the year. Clinton is a 71 percent favorite to win the election according to our
polls-only model and a 72 percent favorite according to our
polls-plus model. (The models are
essentially the same at this point, so they show about the same forecast.) This reflects a
meaningful improvement for Clinton in the past 48 hours as the news cycle has taken a
final half-twist in her favor. Her chances have increased from about 65 percent."
Our forecast has Clinton winning the national popular vote by 3.6 percentage points, which is
similar to her lead in recent national polls. Her chances of winning the popular vote are 81 percent, according to our forecast.
So what’s the source of all the uncertainty? And why does the same model
Our 2012 model is equivalent to our polls-plus model this year
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only a 9 percent chance of winning the Electoral College on the eve of the 2012 election put Trump’s chances about three times higher — 28 percent — this year? It basically comes down to three things:
- First, Clinton’s overall lead over Trump — while her gains over the past day or two have helped — is still within the range where a fairly ordinary polling error could eliminate it.
- Second, the number of undecided and third-party voters is much higherthan in recent elections, which contributes to uncertainty.
- Third, Clinton’s coalition — which relies increasingly on college-educated whites and Hispanics — is somewhat inefficiently configured for the Electoral College, because these voters are less likely to live in swing states. If the popular vote turns out to be a few percentage points closer than polls project it, Clinton will be an Electoral College underdog."