Under the changes, Hunter MP, Joel Fitzgibbon will be without a job as his electorate is split between Pat Conroy's Charlton and Barnaby Joyce's New England.
The northern parts of Charlton will be split between Newcastle and Shortland electorates under the changes.
The re-draw would have come to a blow for Paterson MP Bob Baldwin, who now has an uphill battle to hold his seat in the 2016 election.
Before the changes, Paterson was a Liberal seat with an almost 10% margin, but after moving South will become a marginal Labor seat with a 1.3% margin.
There is speculation that Fitzgibbon will take on Conroy's seat, which now includes his home base at Cessnock.There is also talk Shortland MP Jill Hall will retire before the election, allowing Conroy to run in her place.
More will be known when pre-selection opens later this year.
Images courtesy of the Sydney Morning Herald (LINK), The Daily Telegraph (LINK) and
