"Republican" is the adjective form of the noun "republic." So, no matter how you use it, "Republican" is the correct word for discussing all things wingnut.
"Democrat," however, has both a noun form and an adjective form. In "He is a Democrat," "Democrat" is a noun, a noun used as a predicate nominative, to be specific. However, "Democratic" is the adjective form, as in "the Democratic Party."
As most of us recall, though, Karl Rove decided that all things Democratic should be called "Democrat" even when "Democrat" is grammatically incorrect. Rove called it "Rat fucking."
While I do not recall seeing it myself, I have heard of 2000 political ad in which the word "DEMOCRAT" appeared on the screen, with only the last three letters of the word lingering on the screen at the end of the ad, a little attempt at subliminal messaging.
And so, you hear the childish mis-usage from people who should be above such babyish bullshit, like the Senate majority leader and other Republican politicians. Even Scott Brown risks it in Massachusetts. But, regardless of how much eye-rolling this pisant manuever deserves, professional politicians are one thing, and journalists, even "commentators" are quite another.
Yesterday, Willie Geist spoke of getting messages from his "Democrat friends" about the most recent Presidential debate. (IMO, no one who says "Democrat friends" actually has any.)
This morning, however, Chuck Toad went wee Willie one better, or one worse.
In describing the election of 1800, Toad said that Jefferson was a member of the "Democrat-Republican Party."
The actual name of the Party was Democratic-Republican, something I believe Toad knew very well.
A deliberate grammatical error is one thing. A deliberate mistake on a proper noun, the name of a political party, by someone MSNBC holds out as a professional, adult political commentator, is quite another.
Folks, how about an email?
http://www.msnbc.msn.com/id/48780726#__utma=238145375.2120841038.1350568867.1350568867.1350568867.1&__utmb=238145375.1.10.1350568867&__utmc=238145375&__utmx=-&__utmz=238145375.1350568867.1.1.utmcsr=google|utmccn=%28organic%29|utmcmd=organic|utmctr=%28not%20provided%29&__utmv=238145375.|8=Earned%20By=msnbc|about%20us|contact%20us=1^12=Landing%20Content=Mixed=1^13=Landing%20Hostname=www.msnbc.msn.com=1^30=Visit%20Type%20to%20Content=Earned%20to%20Mixed=1&__utmk=266488397&__utma=238145375.2120841038.1350568867.1350568867.1350568867.1&__utmb=238145375.1.10.1350568867&__utmc=238145375&__utmx=-&__utmz=238145375.1350568867.1.1.utmcsr=google|utmccn=%28organic%29|utmcmd=organic|utmctr=%28not%20provided%29&__utmv=238145375.|8=Earned%20By=msnbc|about%20us|contact%20us=1^12=Landing%20Content=Mixed=1^13=Landing%20Hostname=www.msnbc.msn.com=1^30=Visit%20Type%20to%20Content=Earned%20to%20Mixed=1&__utmk=266488397
(sorry about that. Apparently DU can't handle a URL that long. The link portion did work for me, though.)
BTW, one of the sponsors of the show is the AARP. I'll be contacting them too.
http://www.aarp.org/about-aarp/contact-us/