Spydertek

Ok, here is the problem as best as I can tell it. If my truck sits for a long period of time (i.e. 10 hours +), when I go to start it, as long as I don't push in the clutch the power to the truck stays on. Sometimes when i go to put the clutch in and turn the ignition, it loses all power till i jiggle the key around or slap the top of the ignition switch or even pop the hood. After about 20 times of this, it will try to start, but then it acts like there is no fuel going to the block. At that point i go to turn the key a couple more times and she will start, rough but will start, and until she gets a constant flow of gas, she wants to die. Anyone have a clue what this could be. I thought ignition switch, but some tell me its the power going into fuse block. Please help!!