Definition from Wiktionary, the free dictionary
McCainiac (plural McCainiacs)
- (US, politics, informal, neologism) An ardent follower or supporter of John McCain in his campaigns for the presidency in 2000 and 2008.
2000, March 2, After Primaries, Focus Turns to the Vice Presidential Slot, page A1:
- And, as Bush learned painfully, there are plenty of McCainiacs in pivotal Michigan.