Former executive members of the disbanded Thai Raksa Chart Party (TRC) can help candidates of other parties canvass for votes ahead of the polls, Election Commission (EC) secretary-general Jarungvith Phumma said on Friday.
Mr Jarungvith said the former TRC executives are allowed to campaign on behalf of candidates running under other banners, but warned that they cannot use their presence to dominate other parties.
All 13 executive members were banned from political office for 10 years by the Constitutional Court in its ruling on Thursday that dissolved Thai Raksa Chart for nominating Princess Ubolratana as its candidate for prime minister.
Mr Jarungvith said Rungrueng Pittayasiri survived the ban as he had resigned from the executive before the party tried to register the princess.
Mr Rungrueng quit on Feb 4, four days before party executives submitted the princess's name to the poll organising agency. He also withdrew from as a party-list candidate.
A party source said on Thursday it plans to encourage supporters to vote "no" in constituencies where the part had intended to field candidates. This could result in the ballot for that electorate being annulled and give another party the chance to run a candidate during the poll reruns.
A new poll would be organised in any constituency where the number of "no" votes outnumber the winning candidate's total.
Mr Jarungvith said eligible voters have a choice how to vote, but other people are not allowed to influence or force them to make a particular decision.
After the ruling, the party asked all former candidates to return the equipment allocated to them, including vehicles, for their campaign.
Natthaphat Chanmaen, who was a candidate in constituency 3 in Ratchaburi, went to the head office to hand back cars, mobile speakers, microphones and other equipment to the party.
He said he had been told the party will soon inform members and former candidates of its next move.
Mr Jarungvith urged the party to collect all banners and other items bearing the party logo as soon as possible, although no deadline for their removal has been set.