Andrew Negline, the deputy mayor of Wagga who contested Riverina for the party at the 2010 federal election, says branch members have tuned out for "all sorts of reasons".

"The whole process of being part of the party has been quite disengaging from the top down and I've seen members come and go in the last few years," he said.

The Wagga branch's executive voted earlier this month to meet only once every two months after it was unable to meet quorum at its July meeting.

Cr Negline admitted he hadn't attended a single branch meeting this year and attributed that partly to resentment generated by December's preselection contest for the next state election, which he lost to current member for Wagga Daryl Maguire.

"A lot of my work with the Liberal Party happens outside the local branch, because I've been more engaged to help elsewhere," he said.

"I've found that more productive."

The branch's policy vice-president, Julian McLaren, a Wagga City Council colleague of Councillor Negline, rejected suggestions it was struggling with meeting attendance due to disengagement.

Cr McLaren said the branch had seen "quite a few" new members join in recent months and put the poor turnouts at meetings down to time pressures experienced by members.

"Younger people tend to be a little bit busy with families and evening meetings can be difficult," he said.

However, Cr McLaren conceded the meetings could be made more enticing for branch members to attend.

"When you go to these meetings, they should be an enjoyable meeting and you should be able to discuss politics and policy," he said.

"Maybe that's what we're not doing enough of."

Mr Maguire, a member of the Wagga branch, declined to comment when approached for this story, telling the Advertiser he doesn't comment on party business.