It's the line of attack for any self-respecting Opposition Leader.
Labor leader Bill Shorten will launch a five-week campaign this week on the theme that Prime Minister Tony Abbott is a ''liar''.
The campaign marks a year since the 2013 federal election campaign in which Mr Abbott toppled Kevin Rudd after having successfully weakened Julia Gillard, largely over her ''lie'' on the carbon tax. Mr Shorten will announce a new lie he will attribute to Mr Abbott every day until September 7.
It will kick off with Mr Abbott's remark, made on August 5 last year, that the Coalition was on a ''unity ticket'' with Labor on the Gonski schools funding package. The government has since flagged an end to Gonski and wound back education funding to the states in the budget.
Mr Shorten will also focus on promises not to increase the tax burden - another promise dispensed with in the budget - and Mr Abbott's declaration that there would be ''no cuts to health''.
Labor will even claim that Mr Abbott lied in promising a ''no surprises, no excuses government''. On election day, Mr Abbott said: ''Should the Coalition win the election, I think the most inspiring thing I could do for people is actually keep our commitments.''
Mr Shorten said: ''No political leader has broken promises so shamelessly as Tony Abbott. On schools, on hospitals, on pensions and on taxes, Tony Abbott promised one thing before the election and did the complete opposite after the election.
''Labor won't let the Prime Minister get away with his broken promises. His lies are hurting too many Australians.''
