The National Seniors Australia said on Wednesday that their group gained assurance from Treasurer Wayne Swan that the Labour government would fully support payment increase for the country's pensioners.

Group chairman Everald Compton said that he had personally negotiated with Mr Swan on their proposal of pension increase and the deputy prime minister had apparently pledged that no opposition would arise from the cabinet on that issue.

Mr Compton added that Mr Swan called leaks on Prime Minister Julia Gillard's opposition on pension increase during Kevin Rudd's tenure as prime minister as nothing but questionable ploy of the opposition.

Ms Gillard herself explained that she was merely trying to determine if the planned increase was affordable as she dismissed claims that she wasn't passionate about pensioners' welfare.

The group acknowledged that such reports were aimed to discouraged senior votes for the Labour party but Mr Compton stressed that they were not into block voting and members are free to choose candidates from both the ruling party and the coalition.

He even recalled that during the last election in 2007, many seniors opted to vote for Mr Rudd as most had felt that John Howard had been around too long as the country's prime minister.

For the coming election in August, the seniors group said that they are focusing on 12 marginal seats during the campaign as they embark on a mission that would ensure government commitments on world-class aged care, financial security, support for mature age workers and an end to ageism.

Mr Compton identified the seats as Brisbane, Ryan, Bowman and Longman all in Queensland; Bennelong, Eden Monaro and Paterson located in NSW; Deakin and La Trobe in Victoria; Hasluck in Western Australia; Sturt in South Australia and Bass in Tasmania.