Evolution of the two-party vote during past century

Posted to Maps  |  Nathan Yau

Political science PhD candidate David Sparks has look at the evolution of the two-party vote:

Using county-level data, I spatially and temporally interpolated presidential vote returns for the two major party candidates in each election from 1920-2008. The result illuminates the sometimes gradual, sometimes rapid change in the geographic basis of presidential partisanship.

David notes further:

This animated interpretation accentuates certain phenomena: the breadth and duration of support for Roosevelt, the shift from a Democratic to a Republican South, the move from an ostensibly east-west division to the contemporary coasts-versus-heartland division, and the stability of the latter.

More broadly, this video is a reminder that what constitutes “politics as usual” is always in flux, shifting sometimes abruptly. The landscape of American politics is constantly evolving, as members of the two great parties battle for electoral supremacy.

Watch it play out in the video below.

[David Sparks via @statpumpkin | Thanks, David]

6 Comments

Favorites

The Changing American Diet

See what we ate on an average day, for the past several decades.

Unemployment in America, Mapped Over Time

Watch the regional changes across the country from 1990 to 2016.

The Best Data Visualization Projects of 2011

I almost didn’t make a best-of list this year, but as I clicked through the year’s post, it was hard …

A Day in the Life of Americans

I wanted to see how daily patterns emerge at the individual level and how a person’s entire day plays out. So I simulated 1,000 of them.