You should inform the authorities of your knowledge that a crime has been committed.
It needn’t have been a crime. Maybe Cruz was paying off a bet. Suppose he bet somebody he could get more than 200 people to rally for him? He’d owe money on that bet, for sure.
And what’s this I keep reading about Cruz having 22 people at a Cruz rally? If it’s true, Ted bet someone he could muster 30. Fail.