Another will not start post...

Distributor spins when cranking.
Still no start with ignition on and shorting solenoid.

Would you all agree that I can probably rule out:
Starter solenoid,
Ignition switch,
Starter relay,
Ballast resistor,
Spark plugs, almost new.
Plug wires, also almost new.

One more test.....took out a spark plug, with it connected to the plug wire, leaning against the block, there does not seem to be any spark when cranking motor.

Could my problem be in that distributor?