04/16/2015 04:00 EDT | Updated 06/16/2015 01:12 EDT

Libs, NDP and Wildrose leaders campaign in Calgary, Prentice in southern Alberta

EDMONTON - All four leaders of Alberta's main political parties are campaigning in southern Alberta today.Progressive Conservative Leader Jim Prentice is making stops in Redcliff, Medicine Hat, Bow Island, Taber, Cardston and Lethbridge.The Liberals, NDP and Wildrose leaders will vie for votes in Calgary.Liberal David Swann releases his party's platform at his campaign office.New Democrat Rachel Notley talks about education at a playground.Wildrose's Brian Jean says his party will end government perks.On Wednesday, Prentice promised to axe boards and commissions and to demand wage freezes from unionized staff if the PCs win the election on May 5.Prentice, speaking in Red Deer, reiterated the Tory plan to implement a three-year wage freeze for managers and promised three-year hiring restraint measures.He also said there will also be more controls on severance packages and public disclosure of salaries to managers in Alberta Health Services as well as those in universities, on school boards and in other agencies.The Liberals proposed a five-point plan to strengthen cities. Leader David Swann and candidate Laurie Blakemen say they will push for legal charters to give Edmonton and Calgary added powers to manage growth.They say funding for municipalities must also be made stable to allow for better planning.Notley said new documents show Alberta's ambulance response times are getting worse. She says the data disclosed under freedom-of-information rules shows that the number of red alerts has spiked over the last two years.Red alerts indicate no ambulances are available to respond to emergency calls.