1977 Chrysler Le Baron what is the problem?

OK. Heres the story. Two years ago, a few weeks after I got the car, for four mornings in a row, id turn the ignition and - nada. Lights come on, radio, everything electrical works, but no engine cranking, no clicking from starter, no sound at all. Then maybe 15 mins later it'd start right up, or maybe two hours later. Then eveythings fine for two years. Then about 2 months ago it did it again. And growing more frequently until now it hasnt started for three days. Except this last time (now) it always happened in the morning or late evening. In the day, or id come back when it was warm out, and it starts right up. Not now though. New battery, new alternator, new ground bat cable. Lights do not dim when I goto crank it. No sound and no dimming. Someone said it could be the key switch gets stuck and squirt some oil in there. I did that. It worked for maybe three weeks. Maybe its the starter or cellinoid, but I do not have the money to take it in, so Im screwed if its that right now. Research has gotten to its maybe the ignition switch, since the lights dont dim and all the electrical items seem to be failing this past year - automatic door lock celliniod dead, oil pressure sensor I replaced, hot engine light is on even though the car runs perfectly at correct temp. So I figure its ignition switch going out. So I want a reliable way to by pass the ignition switch. Any ideas? I need to know TODAY.