The LNP will not support either of the abortion bills up for debate this week – despite allowing its members a conscience vote on both.

It means the historic reform is looking increasingly unlikely to pass through Parliament when it goes for debate on Wednesday night.

LNP MPs were allowed a conscience vote on Rob Pyne's second abortion bill but they will not support it.

The LNP members made the decision after what was a very emotional and lengthy party room meeting on Monday afternoon.

The members were particularly concerned with an aspect of the second bill which would make it legal for a woman to obtain an abortion on herself without medical supervision.