A jubilant Australian Prime Minister Scott Morrison on Sunday vowed to get straight back to work after a shock general election victory by his conservative government that has left bewildered voters wondering how they were taken by surprise.

The opposition leader party, meanwhile, began another bout of post-election soul searching while starting the task of finding a new leader, after Bill Shorten stood down on Saturday night following an emphatic defeat.

Center-left Labor, which has governed Australia for only 38 of its 118 years as a federation, was rated an overwhelming favourite, both in opinion polls and with odds-maker to topple the conservative Liberal-National coalition government after its six years in power.

“I’ve always believed in miracles,” a beaming Mr. Morrison told party supporters.

Speaking before attending church in his electorate in Southern Sydney on Sunday morning, Mr. Morrison thanked Australians for returning home to office.