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InternationalHillary Clinton Has a 76 Percent Chance to Win the Presidency

Hillary Clinton Has a 76 Percent Chance to Win the Presidency


Josh Katz @jshkat.
For now, at least, Hillary Clinton has a 76 percent chance of defeating Donald Trump to become president of the United States.

A victory by Mr. Trump remains quite possible: Mrs. Clinton’s chance of losing is about the same probability that an N.B.A. player will miss a free throw.

This electoral probability, the first forecast by the Upshot’s presidential prediction model, is based on the voting history of each state and on roughly 300 state and national polls of the race conducted since mid-April.

Our model suggests Mrs. Clinton is a strong favorite in 15 states, enough to give her 186 of the 270 electoral votes she needs to win the White House. Add to this eight states that polls currently show are leaning Democratic — including Minnesota, Michigan and Pennsylvania — and Mrs. Clinton would have 275 electoral votes and the presidency.

But, with 16 weeks remaining in the campaign, a lot can change. Using the same model, we would have said that Bill Clinton had less than a 20 percent chance to win the presidency with roughly four months to go in 1992. It was only after Ross Perot left the race and the Democrats rallied around Mr. Clinton after the Democratic convention that his polls improved. And they improved sharply. One month later, he was an 84 percent favorite.

This kind of polling volatility should be expected, particularly with party conventions at hand. It is one reason that Mrs. Clinton’s probability of victory is not higher. Current polling averages suggest a four-point victory in the national popular vote for Mrs. Clinton, if nothing changes. But we expect changes between now and Election Day.

The Upshot is not the only news organization trying to forecast election results. We believe each model provides useful glimpses of possible futures, so we are compiling forecasts from a variety of them into one easy-to-digest table.

Viewed side by side, the differences among the models become clearer. Arizona, for example, is rated as a tossup by FiveThirtyEight, while our model has not yet seen enough polling evidence to revise its assessment of Arizona’s recent history as a Republican-leaning state. Similarly, while the betting markets rate New Mexico as almost a sure thing in the Democratic column, our model is not as certain, giving Mr. Trump a 21 percent chance to upset Mrs. Clinton there.

We’ll update our forecast every day until Election Day. Check here to see our predictions and that of others, and to play around with the possible paths that could lead Mrs. Clinton or Mr. Trump to victory. Below is more about how we built our model.


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