[MadMax, the Grinning Reaper]

How about this slogan:

Obama 2008, for Hope and Change
Obama 2012, the Dope has Mange

OR:
Obama: 2008: Hope and Change’
Obama 2012: Running on Empty (like our wallets and gas tanks)

[MM: I willingly accept applause, verbal praise, checks, cash or money orders).

[reg45]

0bama 2012: MOPE DERANGED