rad·i·cal   /ˈrædɪkəl/ Show Spelled[rad-i-kuhl]
–adjective
1.of or going to the root or origin; fundamental: a radical difference.
2.thoroughgoing or extreme, esp. as regards change from accepted or traditional forms: a radical change in the policy of a company.
3.favoring drastic political, economic, or social reforms: radical ideas; radical and anarchistic ideologues.
4.forming a basis or foundation.
5.existing inherently in a thing or person: radical defects of character.
6.Mathematics.
a.pertaining to or forming a root.
b.denoting or pertaining to the radical sign.
c.irrational (def. 5b).
7.Grammar. of or pertaining to a root.
8.Botany. of or arising from the root or the base of the stem.
–noun
9.a person who holds or follows strong convictions or extreme principles; extremist.
10.a person who advocates fundamental political, economic, and social reforms by direct and often uncompromising methods.

Take a look at this and tell me if the definition is appropriate for Andy Stern. Stern helped found the PAC Working for Us. Quoting from their own website, "With Democrats controlling both Houses of Congress for the first time in twelve years, it is time for this paradigm to shift. Working for Us PAC is dedicated to holding Democrats accountable, ultimately at the ballot box. To succeed, we collaborate with those who worked so hard to elect a progressive Congress , including state and local activists, the netroots and progressive organizations."

http://www.workingforuspac.org/

http://www.discoverthenetworks.org/i...asp?indid=1830