(a) Any number of voters may sign the same petition.
(b)(1) A voter’s signature shall not be valid unless at the time he or she signs, the voter is registered and qualified to vote for the candidate whose petition he or she signs.
(2) Each voter shall indicate his or her town of residence next to his or her signature.
(c) The signature of a voter on a candidate’s petition does not necessarily indicate that the voter supports the candidate.
(d) A petition shall contain the name of only one candidate.