I’m going to take a stab at starting a periodic new TAPPED feature called “This Should Make You Nervous.” Herewith, and with no great fanfare, is the inaugural edition, on the theme of presidential candidate electability:

If you’re Barack Obama, this should make you nervous.

If you’re Hillary Clinton, this should make you nervous.

And if you’re John McCain, this should make you really nervous.

–Tom Schaller

Thomas F. Schaller is an associate professor of political science at the University of Maryland, Baltimore County, and author of The Stronghold: How Republicans Captured Congress but Surrendered the White House.