Partisan

Partisan: "a firm adherent to a party, faction, cause, or person; especially one exhibiting blind, prejudiced, and unreasoning allegiance."

"The presence of an excessive partisan bias transforms journalism into advertising, too distorted and unreliable to be useful in any serious political debate."

Related SourceWatch articles

 * U.S. presidential election, 2008

External articles

 * Jane Hamsher, "I'm proud to be a partisan," Firedoglake Blog, July 25, 2007.

External resources

 * Partisan (political) in the Wikipedia.
 * Lying in Ponds website; "Partisan" index methodology.