Camera IconA new poll has revealed SA-BEST leader Nick Xenophon may not win his own seat at the SA election.
Nick Xenophon might not win his own seat at the South Australian election, a new poll has revealed, as the state's political leaders continue their final push of the four-week campaign.
In an Advertiser-Galaxy poll of 590 voters in the seat of Hartley, incumbent Liberal MP Vincent Tarzia leads the SA-BEST party leader 51 to 49 per cent in the two-party preferred vote.
Mr Tarzia also polled the highest primary vote at 38 per cent, ahead of Mr Xenophon on 30 per cent and Labor candidate and former minister Grace Portolesi on 22 per cent.
Mr Xenophon called Saturday's election a "two-horse race" and appealed to voters to consider where their preferences will be directed.
"My message to Labor and Greens voters is that if they vote for Labor or the Greens in the seat of Hartley they'll effectively be delivering the seat to the Liberals and to Mr Marshall," he said.
He said it was premature to comment on how the party would operate if he failed to win Hartley.
"There'll obviously need to be a parliamentary leader if I don't make it, but I'm not contemplating that," Mr Xenophon said.
The former federal senator on Tuesday revealed a plan to "drought-proof" South Australia by pledging $20 million to develop a state-wide stormwater plan, should SA-BEST win balance of power.
"As the driest state in the driest continent we have an obligation to ourselves to tackle a world water shortage before it happens," Mr Xenophon said.
The Liberals offered up a major funding commitment of their own - a $16 million pledge to extend outreach palliative care services to 24-hours, seven days a week and a promised a statewide review of all palliative care programs.
In Mr Marshall's electorate of Dunstan, Premier Jay Weatherill campaigned with local Labor candidate Matt Loader - though the Advertiser-Galaxy poll suggests the opposition leader has little to worry about.
In the two-party preferred vote, the poll has Mr Marshall leading Mr Loader, a former federal candidate, 53 to 47 per cent.
Earlier in the day, the premier promised at least 90 per cent of work on Labor's major infrastructure projects would be completed by South Australians.
"Our infrastructure agenda will create thousands of jobs, and today, I am guaranteeing that South Australians will get the vast majority of that work," he said.
A re-elected Labor government has committed to a $2 billion pipeline of major infrastructure projects.