A  All M
good citizens S
obey the law,

A ∴ All S
who obey the law G
vote.

The mood is

A
A
A used in the third figure. All the propositions are A’s, hence the negative and particular rules are inapplicable. “A” distributes its subject. The middle term is distributed in both premises. “All who obey the law” is distributed in the conclusion but not in the premise where it is used. Therefore the argument is invalid. The fallacy being illicit minor.

A
A
A is not found in the third figure’s list of valid moods.

(4) A  All M
good citizens G
vote,

E  No S
criminal is a M
good citizen,

E ∴ No S
criminal G
votes.