Famed analyst accurately predicted state outcomes that led to Obama win
in 2012 election but failed to foresee Trump becoming the Republican
nominee
Famed analyst accurately predicted state outcomes that led to Obama win
in 2012 election but failed to foresee Trump becoming the Republican
nominee.
Hillary Clinton has an 81% chance
of winning the election to Donald Trump’s 19%, polling analyst Nate Silver said on Wednesday in his first model of the 2016 presidential election.
Silver’s calculations are based on a model that processes polling
data exclusively. A second model produced by Silver’s FiveThirtyEight
web site, taking in economics statistics and historical data, portrayed a
slightly tighter race, at 74%-26% for Clinton.
Silver gained international fame for his perfect, 50-for-50
performance at predicting state outcomes in advance of the 2012
presidential election. Where many pundits saw a tight race between
Republican nominee Mitt Romney and incumbent president Barack Obama,
Silver correctly foresaw a 332-206 electoral college blowout.Silver’s performance was almost as good in 2008, when he correctly
predicted outcomes in 49 of 50 states, and predicted the popular vote
margin to within a percentage point.
Since becoming a smash success in 2012, however, Silver and his
FiveThirtyEight colleagues have suffered some high-profile misses that
could lead some observers to discount their predictions this year. Their
most high-profile miss of all: Donald Trump.
Last August, Silver rated Trump’s chances of winning the Republican
nomination at 2%, and he remained bearish on Trump’s candidacy
throughout the fall. The mistake, he has since admitted,
sprang from a blindness to the very data he has made a career reading
so well. The polls showing Trump’s strength were right; the nagging
contextual information that Silver admitted he allowed get in the way –
historical data, “gut” feelings about the candidate – was, in Trump’s
unique case, highly misleading.
FiveThirtyEight has made other mistakes. In March a FiveThirtyEight model
gave Clinton a 99% chance of winning the Michigan primary; Bernie
Sanders won by a half-point. In the 2014 midterms, the site failed to
anticipate a Republican wave that generated multiple upsets for its
models. “The polls did have a strong bias this year,” Silver wrote afterward.
Apologists for Silver might point out that despite his mistaken
calls, he has usually been right, and quite precisely right, especially
when it comes to presidential elections, which is the topic of inquiry
at hand.
Silver’s model is not out of line with recent national polling, which
has given Clinton a lead of six or seven points, on average. The polls
are not, however, uniform. A survey released on Wednesday by the reputable pollsters at Quinnipiac University depicted Clinton with only a two-point lead, 42-40.
Silver’s modeling of a strong chance of victory for Clinton in 2016
is based on analysis of the 50 separate state races plus Washington DC.
Clinton’s strength is visible in the 12 tightest state races as
identified by the model. These toss-up races happen to a much higher
degree in territory that Trump needs to win. In fact, Clinton does not
need any of them: she could lose the first 12 toss-ups, as ranked by
Silver, and still win the presidency, if only she won Florida, which
Silver’s model judges to be, at this juncture, the 13th-closest state
race.
The model weighs in on other important questions about the 2016 race.
This includes how Pennsylvania will vote, which has been safe
Democratic territory but has trended Republican in recent election
cycles. Silver’s model gives Clinton an 85.9% chance of winning the
state, and its 20 electoral votes.
The model also has Arizona, which should be a Republican shoe-in,
basically tied, with a slight edge for Clinton. The model has North
Carolina, Iowa, Colorado, Ohio, New Hampshire and Florida all leaning
toward Clinton. The model really stinks for Trump.
Entertainingly, the FiveThirtyEight forecast includes a section that
awards probabilities for “crazy and not-so-crazy scenarios”. For
example, the model thinks that Trump has a 90.6% chance of winning at
least one state Obama won in 2012; so keep your eye on Colorado, Iowa
and New Hampshire. The model puts the probability of a “Clinton
landslide” at 29.2%.
Obama’s 2008 campaign manager, David Plouffe, predicted
on Wednesday that Clinton would win the presidency with more than 350
electoral votes. It would not be a rare feat – Obama beat John McCain
365-173 in 2008, and Bill Clinton beat Bob Dole 379-159 in 1996.
The question for Silver is whether he can go 3-0.
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