In my opinion, the decision to vote for or against the current administration has little to do with what course of action you take NOW. Most people, including most democrats, agree that staying for *some* period of time is the way to go and that packing up and leaving in the short term is a bad idea.
What *does* matter is how much you trust the current administration to competently execute the plan. If you believe that they messed up in the past, then this should be a signal to you that you might mess up in the future! If you believe that the Iraq war has gone just great, then by all means continue to support the administration.
Again, it’s not about the direction we take; it’s about who you trust more to not mess it up.