Shadow foreign affairs minister and senior moderate Liberal Simon Birmingham has become the latest shadow cabinet minister to state an alternative position on the Voice to parliament referendum in comparison to the Liberal Party's position.

Mr Birmingham has confirmed he will not participate in the Liberal Party's 'no' campaign, instead saying he will maintain a position which allows voters to use their own discretion in the lead-up to the referendum on a constitutionally enshrined Indigenous Voice.

"I don't wish to see an unsuccessful referendum put forward to the Australian people," Birmingham told Sky News.

"It's ... not my intention (to campaign for 'no').

"My intention is to respect the Australian people who will go about this referendum applying their judgement to the is sues they have before them."

The blow for opposition leader Peter Dutton comes just a day after Julian Leeser resigned from the shadow cabinet, giving him the opportunity to vote with his conscience on the upcoming Voice referendum.

Although having indicated he will not campaign for a 'no' vote, Mr Birmingham said he would not resign from the shadow cabinet.

He said he would not follow Mr Leeser's position at this point, although also suggesting it was "equally not" his intention to campaign for the 'no' case.

Mr Birmingham's position comes after opposition leader Peter Dutton doubled down on his view that a national Voice won't lead to better Indigenous outcomes, suggesting the government's model will not provide practical outcomes for Indigenous communities.

"If you aren't out there, and you aren't listening to what people are saying, then it's very hard to find the solutions," Mr Dutton told reporters in Alice Springs.

"Solutions aren't going to be given to you by bureaucrats in Canberra.

"I don't believe that a Canberra voice of 24 people who predominantly come from capital cities is going to be the solution to the problems here on the ground. If it did, I'd embrace it straight away."

However Mr Dutton's perspective was dismissed by the first Aboriginal person elected to the House of Representative, former Liberal Indigenous Australians Minister Ken Wyatt who hit back at Mr Dutton's view that the Voice would be "elitist" and Canberra-focused.

"It's not a Canberra voice. It's not elite. It's people from the grassroots," he said.