Former foreign minister Alexander Downer has been elected unopposed as the president of the South Australian Liberal Party.
Mr Downer replaces Grant Chapman who has held the position for the past three years.
His appointment was confirmed at the party's annual meeting in Adelaide on Saturday.
Mr Downer said the challenge for the party was to ensure the election of a Liberal government in South Australia in March next year.
"In the last few months this party has shown rather surprising, but very welcome, unity," He said.
"If we can maintain this sense of unity, focus on a single goal and a determination to achieve that goal then we'll have a great victory."
Mr Downer said the election would not be easy and the party had to ensure it retained its marginal seats and picked up marginal seats from the Labor government.
At the last election in 2010 the Liberals won the popular vote but failed to win a number of key seats it needed to form government.
"So it's not about the number of votes, it's about the number of seats," Mr Downer said.
Prime Minister Tony Abbott congratulated Mr Downer on his appointment, describing the former minister as one of the great performers in former prime minister John Howard's government.
"I know he is absolutely the man to lead and guide the party as you approach the vital (state) election in March of next year," Mr Abbott told the annual meeting.