Rough cold start ( not cold weather - cold engine )

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I live in Florida. Very humid. Car has 150,000 miles on it. Once the vehicle has been sitting over night or a few hours it cranks for a long period of time. Once the engine turns over it sputters and I smell raw gasoline, some smoke. I have to keep pressure on the accelerator to keep the car running or it dies. Once the engine "clears" it runs fine, shifts smoothly, idles steady. The car has had a recent tune-up: new spark plug wires / plugs, oil change, new distributor.