For someone to be able to put on a resume that they are a Notary Public, even if they don't make much money, if any money at all, can be a plus for them when they go for a job when they are trying to get their "feet back on the ground" so to speak, and are trying to re-enter society as a productive citizen again.
Sure, there are costs that are incurred by becoming one. But, if the person can afford it, becoming a Notary Public is one of the ways that a person that has been convicted of a felony can show others that they are really trying to not be remembered for possibly the worst thing that they ever did and are trying their best to integrate themselves back into society as a law-abiding, beneficial-to-others citizen.
From:
Registering and Voting
I was convicted of a felony, but I have served my time and am on probation. Can I register to vote?
No. A convicted felon may not register to vote unless unconditionally discharged from custody. When you are no longer on probation and have received a copy of your discharge papers you will be allowed to register.
From:
Missouri Voter Registration Info, Forms, & Requirements - DMV.ORG
Voter Eligibility
In order to vote in Missouri, you must:
Be a U.S. citizen
Be a Missouri resident
Be at least 18 years old by the day of the election
You must also be registered in the jurisdiction of your domicile before the election. You cannot vote if you:
Have been declared incapacitated
Are imprisoned
Were convicted of a felony or misdemeanor related to voting
Are on probation or parole after a felony conviction