Odds are pretty high that at some point during your poly whether its the interview before hand or while your hooked up that you'll be questioned about certain things relating to your integrity one of which will be have you ever commited a crime etc. I was asked a few different relevant questions such as since the age of 16 have you done anything unethical, have you commited a crime and not been caught for it in the past 5 years besides traffic violations, and have I done anything that would have had me fired from employment.
IF you did something that could be constured as a Felony than you will probably have a difficult time obtaining a position if it comes to light during the poly. Especially if that act occured after the age where you are considered an adult in your state. Your only course of action is to be honest and see what happens.
“Take you hands off the car, and I’ll make your birth certificate a worthless document." UNKNOWN