I've played both ways, but I think you should reset it, yes. That's what the rules recommend. The rules state that you only reset the Vote Track after the vote fails three times in a row - not three times in total. The unlocked Presidential Power is also meant to be ignored when a Policy is automatically enacted. I personally prefer this method. By resetting the Vote Track after each enacted Policy, there's more time to work out who has which role. If the Tracker isn't reset, it adds more pressure on the Liberals to accept any old Chancellor. If you want the game to be shorter, don't reset the Vote Track after three non-consecutive vote failures. You could also use the Power unlocked after the Policy is automatically enacted.