Final answer:
The authors use quantitative information, expert opinion, and historical information to support the claim that denying the vote to ex-offenders is antidemocratic.
Step-by-step explanation:
The authors use quantitative information, expert opinion, and historical information to support the claim that denying the vote to ex-offenders is antidemocratic.
Quantitative information is provided when the authors mention the number of voters who were listed in error and should be allowed to vote. Expert opinion is used when the editorial board of The New York Times expresses their view on the arbitrary grounds and varying rules regarding the restoration of voting rights. Historical information is used to highlight the origins of felony disfranchisement laws and their disproportionate impact on poor minority members.