Mr Deller, who was runner-up in the 2015 byelection won by Russell Keys, said while he had yet to make a final decision, he was a "yes" at this stage.
His final decision would be influenced by which councillors decided to run, Mr Deller said.
Mr Booth said he was definitely standing for the mayoralty in October and would consider the possibility of running for Wairarapa mayor, if the amalgamation of the three councils were to go ahead.
"That's a conversation I'll have with my family.
"It's crossed my mind but I'll make a decision with the family because it's going to be a big one if we get it over the line."
Stepping aside for the 2016 election is Deputy Mayor Elaine Brazendale, who is standing down after 21 years on council.
"It's good to go out on a good note and there's a lot of positivity in the Carterton District Council and a good team so I'll be a bit sad to step back from that, but I will have completed 21 years by the time the next election comes around.
"I've given my best and I'd rather finish at that point in time, rather than just keeping on," Mrs Brazendale said.
She hoped that by creating a vacant seat someone new might be encouraged to stand.
"My view is 21 years ago I was 21 years younger and I had that opportunity to get on council at that younger age and I'd like to think by standing aside I might be allowing a younger person to come through."
Councillor Mike Palmers said he was still "weighing it up" but was likely to stand again.
He said he would not make a final decision until mid-year.
Councillor Mike Ashby said he was unsure if he would stand again due to the amount of time taken out from managing his farm.
His decision to run would be influenced by the outcome of the local government proposals later this year, Mr Ashby said.
"If this amalgamation looks to be moving ahead I'd like to see us through till then by doing another two-year term -- and if it doesn't look like going ahead I might not because I'm finding the conflict between operating a business and being a councillor fairly difficult to manage."
He was also keen to see some "fresh blood" coming through, he said.
Also undecided are councillors Greg Lang and Bill Knowles.
Mr Lang said it was difficult managing the demands of his restoration business and council.
"I haven't really made the decision -- there's a bit of water to go under the bridge yet and I'm really busy at the moment... it would help if all council business was all on the same day but at the moment there's meetings all over the place."
He said if elected again, he wanted to be able to give his role as councillor "100 per cent".
Mr Knowles said there was a possibility he might retire and "quietly disappear into the wild blue yonder", but he was still in discussions with his campaign manager, daughter-in-law Helen Hatchard.
