Isarithmic maps are essentially topographic or contour maps, wherein a third variable is represented in two dimensions by color, or by contour lines, indicating gradations. I had never

Isarithmic maps are essentially topographic or contour maps, wherein a third variable is represented in two dimensions by color, or by contour lines, indicating gradations. I had never seen such a map depicting political data — certainly not election returns, and thus sought to create them.The isarithmic depiction does an excellent job of highlighting several broad patterns in modern U.S. political history. 

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.

Sen. John Kerry (D-Mass.) shared some of the outlines of the anticipated Kerry, Graham, Lieberman climate bill today, telling Clean Skies News that the comprehensive bill will be

Sen. John Kerry (D-Mass.) shared some of the outlines of the anticipated Kerry, Graham, Lieberman climate bill today, telling Clean Skies News that the comprehensive bill will be unveiled sometime soon. (February 2010)

carbon  Tax  Clean  Skies  News  Clear  Act  climate  bill  comprehensize  Edison  Electric 

Then President-elect Barack Obama in a speech (video) to the Global