But 10 months later, it appears Mr Turnbull's chances of remaining prime minister could hinge on whether voters believe he can and will deliver on those words.
Mr Turnbull has faced serious hurdles in getting his way over tax reform, the environment and same-sex marriage from many Tony Abbott supporters on his own backbench.
Many voters have expressed disappointment with his performance, and his personal popularity has dropped in the polls since he took the top job.
But he has told the ABC the numbers do not concern him.
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