During his completely forgettable acceptance speech, McCain said:

I fight to restore the pride and principles of our party.  We [Republicans] were elected to change Washington, and we let Washington change us.

In other words, it was the same reform mantra that you are hearing today that was used to propel his party into power, whereupon the party mostly failed to do any of the things the voters expected it to do and instead ushered in an era of corruption, government expansion, unnecessary war and subversion of constitutional liberties, so we should give them another chance to do all of it to us again.  I am not sure that we can endure another such era of reform and restoration.