(2) “If one believes in the tenets of the democratic party, then he should vote for its candidates; and since A does believe in them I have asked him to vote for me.”
Arranged, and antecedent and consequent indicated.
If one believes in the tenets of the democratic party (antecedent), then he should vote for its candidates (consequent);
And A does believe in these tenets,
∴ He should vote for its candidates (I have asked him to vote for me).
The minor premise affirms the antecedent and thus the argument is valid according to rule.
Reduced to the categorical:
A M
One who believes in the tenets of the democratic party should vote for its M
candidates,
A S
A believes in these M
tenets,
A ∴ S
A should vote for its G
candidates.