multiple voting vs balloting

multiple voting and balloting both are nouns.

Word	Noun	Adjective	Verb	Adverb
multiple voting	Yes	No	No	No
balloting	Yes	No	No	No

As nouns, balloting is a hypernym of multiple voting; that is, balloting is a word with a broader meaning than multiple voting:

multiple voting: the act of voting in more than one place by the same person at the same election (illegal in U.S.)
balloting: a choice that is made by counting the number of people in favor of each alternative

Other hypernyms of multiple voting include ballot, vote, voting.

multiple voting (noun)	balloting (noun)
the act of voting in more than one place by the same person at the same election (illegal in U.S.)	a choice that is made by counting the number of people in favor of each alternative