Princeton Election Consortium

A first draft of electoral history. Since 2004

Entries from November 5th, 2010

How’d we do? 2010 edition

November 5th, 2010, 6:50am by Sam Wang

The near-final outcome of the 2010 elections is Senate 53D, House ~243R. What an event – the largest Republican majority in six decades. Yet a clear majority for Democrats in the Senate. This should be an interesting two years. So how’d we do? As I wrote before, Senate poll medians did well, with Nevada as [...]

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Tags: Politics

Medians win, except…Angle Defeats Reid!

November 3rd, 2010, 9:08am by Sam Wang

I will write more later, but overall the simple approach did well…though not as well as expected. Current actual outcome: Senate 52D, House about 245 243R. The House discrepancy, about 1513 seats, is equivalent to about 1.6 1.4 percentage points of popular vote. Not ideal, but pretty good. If you’re dissatisfied, consider that this transparent, [...]

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Tags: Politics

Democrats outperforming national polls in district-level polls

November 2nd, 2010, 1:43pm by Sam Wang

The Gallup generic Congressional preference poll (R+15%) has drawn notice, including from ostensibly statistics-savvy poll geeks. It’s unclear why since individual data points always vary more than averages. Then again, as the saying goes, if it bleeds it leads. But there’s something more surprising.

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Tags: Politics

So-called election “forecasting”

November 2nd, 2010, 12:52am by Sam Wang

Political scientist Matthew Dickinson offers a cogent essay on the difference between a real prediction and electoral “forecasting”.

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Tags: Politics

Monday final: Senate 51D-49R, House 230R-205D

November 1st, 2010, 6:27pm by Sam Wang

In the Senate: In critical states there are so many polls that fairly exact statements can be made. The probability of the Senate remaining Democratic is nearly 100%*. Assuming polls are unbiased on average, with 85% probability the following exact outcome is predicted: 51D-49R. Knife-edge races: WA: Murray (D) over Rossi (R) by 2.0 +/- [...]

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Tags: Politics