The Coalition’s promised cash surplus could only be achieved through major infrastructure or service cuts, a leading economist has warned, as government modelling claims Opposition Leader Jess Wilson faces a budget black hole in the tens of billions of dollars. Wilson accused Labor of embarking on a “desperate and deluded scare campaign” in a budget reply speech which argued her 10-year economic plan would save billions with a public service hiring freeze and by eliminating corruption and waste in major construction projects. Opposition Leader Jess Wilson says Labor is “borrowing from our future to pay for today”. Luis Enrique Ascui The government’s modelling, released to The Age , claims that because Victoria currently borrows between $7 billion and $8 billion a year for infrastructure, the Coalition would need to find savings of $26.4 billion to reach its promised cash surplus by 2032.…