A strong majority of Saints fans have voted to stop Celtic and Rangers being given two stands when they visit the SMISA Stadium next season.
A significant amount of the Paisley club's supporters made it clear last season they were unhappy with the Old Firm taking over the Tony Fitzpatrick Family Stand, with home fans being relocated elsewhere on those match days.
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St Mirren put together a survey to gauge support for keeping all three stands, with a 'Help a Buddie' and voluntary £30 contribution scheme designed to help offset to the potential losses from selling out two stands to Celtic and Rangers fans when they came to Paisley.
And the Buddies board have now announced the strong support for these has given the club the confidence to take the step.
St Mirren chairman John Needham said: "We’ve listened carefully to our fans and today’s announcement is a huge vote of confidence in our supporters.
"They have made it very clear that they want increased numbers of St Mirren fans in attendance for all home matches.
"The decision to retain all three stands for St Mirren supporters for all home league matches is ultimately driven by our fans and that’s what’s allowed the Board to make this decision.
"Our supporters have been incredible in recent times, and as a fan-owned club their views are hugely important to us.
"We want to take this opportunity to thank our supporters for their loyalty and we look forward to working with the local community to encourage and welcome new fans as we set out to engage the next generation of St Mirren supporters."