A grassroots revolt against the suspension of a Liberal Party branch member is brewing, with party members slamming the move as disgraceful.

Barrister Juris Laucis was suspended from the NSW division of the party, along with former parliamentarians Ross Cameron and Charlie Lynn, for six months for hitting out at pre-selection processes.

Internally, the three banned members are being referred to as the "the 7.30 Report three", after they spoke to the ABC's 7.30 program for an investigation into Liberal pre-selections.

The men are pushing for democratisation of the party to allow branch members a direct vote to select candidates, alleging the moderate faction has become all powerful in NSW.

7.30 has obtained emails sent among Liberal Party branch members, including to NSW Premier Mike Baird, expressing support for Mr Laucis.

"This is disgraceful – and unfair that someone who truly loves the party should be disciplined ahead of those of us who secretly despise it," reads one, whose author asked not to be named for fear of also being suspended from the party.

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Another branch member, who has been a member and an office bearer for decades, replied: "What a total disgrace. This should energise us all to go to the next level and demand reform, plebiscites, decent candidates of talent."

That branch member also requested their name be withheld as it would lead to expulsion from the party.

A number of other emails expressed similar sentiments.

"The support I've had from members is overwhelming," Mr Laucis told 7.30.

"I'm very heartened by the fact I've been suspended. I take that to be an indication that the campaign for democratisation is starting to worry those opposed to it."

The suspensions were announced on Friday and were signed by acting state party director Simon McInnes.

The letter advising of the suspensions said the three had been suspended for breaching the party's media regulations, which state "no public statements, either oral or written, can be made by Party Members in relation to Party matters unless they are authorised by the State Director".

The letter said the activity was likely to "result in damage to the reputation of the Division or Organisation; cause embarrassment to the ... Party or Parliamentary Leader; and/or reduce the Division's or Organisation's prospects of success in any election".

It said the men had no right to an appeal.

7.30 approached Mr McInnes for comment but he said he had nothing to add to the letters.

On 7.30 on Friday night, Mr Lynn said the suspensions were proof the factions had triumphed over democracy.

"The factions have isolated the membership," Mr Lynn, who served in the NSW Upper House for 20 years, said.

"So, there's no democracy in the Liberal Party and democracy is the key principle of freedom."