FREDERICTON - Federal New Democrat Leader Tom Mulcair says he supports his New Brunswick NDP counterpart's position on shale gas development.

Mulcair joined provincial NDP Leader Dominic Cardy on the campaign trail in Fredericton in the final days before the election Monday.

Cardy has promised to wait two years before considering development of a shale gas sector, at which point companies wanting to exploit the resource would have to undergo tests to assure health and environmental concerns are satisfied.

Cardy has also committed to setting up a royalty rate and putting shale gas development to a free vote.

Shale gas development has been a divisive issue in the campaign, with the Liberals saying they would implement a moratorium while the governing Progressive Conservatives promoting it as a way to stimulate the economy.

Two other federal leaders -- Justin Trudeau of the Liberals and Green Leader Elizabeth May -- have also campaigned alongside their provincial counterparts since the campaign began a month ago.