By The Canadian Press

EDMONTON - The New Democrats are challenging Wildrose Alliance Leader Danielle Smith to reveal who donated to her leadership campaign.

Smith has said she can't divulge her backers because they might face retribution from the Tory government.

But the NDP's Rachel Notley says the new Wildrose leader should set an example of transparency by releasing the names.

She points out that Smith has said that she believes oil companies should pay less in royalties.

Notley suggests Albertans have a right to know whether oil companies were major donors to Smith's campaign.

Notley is calling for legislation requiring full disclosure of donations to political and leadership campaigns.