A 20 year veteran of the NSW Parliament, Charlie Lynn, says he has been inundated with messages of support since his shock suspension by the Liberal Party.

Mr Lynn, who retired from the NSW Upper House before the 2015 election, was issued with a six-month suspension for speaking publicly on ABC television's 7.30 about the need to reform the NSW Liberal Party's preselection processes.

"People are telling me to keep speaking out": Charlie Lynn. Credit:Ben Rushton

But Mr Lynn's views on the topic are not new. In his valedictory speech to the NSW Upper House, he had highlighted the need to get more women preselected to the upper house, arguing that without reform, the NSW Liberals risk "being depicted as a white-bread Anglo enclave run by misogynistic factional warlords".

"People are telling me to keep speaking out," he said on Saturday, a day after he learnt of the suspension.