no start

This morning My jeep wouldn't start. I juggled the shifter in P and N and still nothing,Disconnected the batery a few times and it finally started. If the NSS is bad will it not start in N or should it start in neatral no mater what??When it wouldn't start with the key in the on position I had no power to the windows,locks,radio,nothing.91 I6 aw4 4x4

maybe the ignition switch at the bottom of the steering column.

Thanks for the info guys.When it did it the first time I giggled the shifter and it fired.I stopped to get some of this high dollar gas they are sticking us with and when I turned the key there was nothing.No click,no power to windows,locks radio,clock nothing. I let it set for a few minutes and played with the battery terminal and nothing. Then all of the sudden bam, it fired.When I first bought it the windshield was leaking.I resealed it and wonder if the ignition may have gotten wet and now that it is dry may be corroding.I am on my way out to check all connections. Volt meter gauge is running in the middle ar 14.