No ignition on first turn of key

For the past week or so, the first time each day that I’ve attempted to start my 1996 Toyota Avalon nothing at all has happened on the initial turn of the key. But, the car starts perfectly on the second turn and in subsequent starts during the day. Doesn’t seem to depend on the temperature. An obvious explanation?

No. When you turn the ignition key, the power goes through several switches, each, having contacts. Each contact could be iffy. Contacts are in: the ignition switch; park/neutral switch; maybe, an immobilizer switch; maybe, a starter switch; finally, the starter solenoid. Piece of pie. /// A knowledgeable mechanic can use a voltmeter to find a voltage drop(s) across each of these switches for one which is problematic. Suspect switches are usually changed, if not adjustable.