Prime Minister Malcolm Turnbull has urged South Australians to install a majority Liberal government when they go to the polls next month, to end 16 years of "dysfunctional" Labor rule.
At the Liberal campaign launch on Sunday, Mr Turnbull said Liberal Leader Steven Marshall shared the coalition's vision for a strong economy where businesses could grow and create jobs.
"Steven Marshall and the Liberal Party are the only ones with a plan for real change," he told the party faithful at a local surf club.
"And they are the only ones capable of delivering it.
"That's why this election is so important."
Mr Turnbull also continued previous attacks on the Labor government, deriding its renewable energy strategy.
"The families and businesses of this state know they cannot afford another four years of Labor.," he said.
"South Australia cannot afford another four years of reckless experiments."
Mr Marshall told the gathering the Liberals had a strong plan for real change in SA.
"South Australia is a great state, but we are being let down by an arrogant and dysfunctional Labor government," he said.
"We must immediately address the economic problems that 16 years of Labor government has delivered or we will fall further behind the rest of the nation."
Mr Marshall said the Liberal plan included cutting business and household taxes and redirecting funding to services instead of government advertising.
"The Liberal Party is committed to delivering more jobs, lower costs and better services," he said.
"South Australia needs a government that is focused on solutions, not stunts."
The Liberals are trying to unseat the Labor government which has been in power since 2002 and is bidding for a record fifth straight term.
But both the major parties were expected to face a strong challenge from Nick Xenophon's SA-Best group with the popular former senator planning to run candidates in up to 30 of SA's 47 lower house seats.
