Another New South Wales Labor MP, Tanya Gadiel, has decided she will not re-contest the March state election.

The MP for Parramatta has been in parliament since 2003.

Ms Gadiel has previously indicated that she would be standing again at the election, but she says she has now decided she would like to spend more time with her young children.

"I've a five year old and a seven year old and at this stage they really need their mum," she said.

"My girls have been crying every night that I have had to go out and go to my work functions."

It is understood Ms Gadiel did not have the factional support to win pre-selection and would have needed support from Labor's head office.

The Labor Party holds the seat of Parramatta by a margin of 13.7 per cent.

Ms Gadiel is the 19th Labor MP who has announced they are bowing out of politics.

But that figure does not include the MP for Drummoyne Angela D'Amore who was yesterday stripped of her Labor Party membership after an adverse corruption finding.

The Coalition's Chris Hartcher says Labor MPs are voting with their feet.

"Labor member of parliment after Labor member of parliament has lost confidence in the government, has lost confidence in the government's ability to face the electorate in March of 2011," he said.

"It's not so much a clean-out in the Labor ranks as a walk out."