Rutherglen MSP Clare Haughey says the Scottish Government has a “castiron democratic mandate” to hold a second independence referendum.
She was speaking after voting with her SNP colleagues to back a second vote once the terms of Brexit become clear.
A vote on a second referendum was passed after Green MSPs backed the government.
Ms Haughey said: “The Scottish Parliament has voted in favour of holding an independence referendum, once the terms of Brexit are clear, to give people in Scotland a choice over their future.
“It would be undemocratic, indefensible and completely unsustainable for the Tory government at Westminster to ignore the will of the parliament and block a referendum.”
However, a poll on the popular Facebook page, All About Cambuslang, suggests a majority of people in the town wish to avoid a second vote.
Around 1000 people took part with 34 per cent saying they wanted a referendum.
Alex Black, who runs the page and has campaigned in support of the union, said: “I would like to thank everyone who took part and for keeping the debate civil which was a credit to our community in these uncertain times.”