Aboriginal activist and educator Lewis Cardinal says he's not going to run for the NDP in the next federal election after all.

Cardinal says he will be stepping down as the party's candidate in Edmonton Centre due to personal and health reasons, but didn't specify details.

It was just a few weeks ago that federal NDP Leader Tom Mulcair made a stop in Edmonton to mark Cardinal's nomination.

There had been hope within the party that Cardinal might have a shot at the riding because the incumbent, Tory Laurie Hawn, is not running.