TONY ABBOTT has mocked Julia Gillard's decision to attend next month's royal wedding, saying she does not believe in God, the monarchy or marriage.

Mr Abbott, a staunch Catholic and monarchist who is married with children, questioned Ms Gillard's bona fides to attend the wedding during yesterday's joint party room meeting.

No invite for Abbott ... but he says the PM will get a bounce from attending the royal wedding. Credit:Alex Ellinghausen

He was seeking to explain a boost for the government and a slump for the Coalition in the latest Newspoll.

Labor's primary vote rose six percentage points in a fortnight, the Coalition's fell five points and Mr Abbott's personal ratings plunged.