Airdrie will hope to get past League One rivals Queen's Park at New Broomfield on Sunday to grab a place in next season's Championship.
Their play-off final second leg is on a knife-edge following the 1-1 draw at Firhill on Thursday night, but the Diamonds will hope that home advantage sways the game in their favour.
Rhys McCabe's late penalty equalised Simon Murray's opener for the Spiders, to give Ian Murray's side hope of finally making the step up, after years of trying.
It has been a hugely impressive season for Airdrie, who ended the season on a 20-game unbeaten run that set a new club record.
They lost 1-0 in their semi-final first leg at Montrose, but turned it around in spectacular style at Airdrie to win 6-5 on aggregate after extra-time, to progress to Thursday's final first leg.
With restrictions lifted, a crowd can go to the game on Sunday, and Airdrie would appreciate as much support as they can get for such a crucial match. It's a 1.10pm kick0off, tickets are £15 for adults, £10 for concessions and £5 for kids.
But for those who can't make it to New Broomfield, the game is live on BBC Alba, with the show starting at 1pm.
Airdrie are also streaming the game live on Diamonds TV here, priced at £15.
Man in the middle
Referee for the crunch clash is Andrew Dallas, who will be assisted by David Doig and Ralph Gordon, with Matthew MacDermid as fourth official.
Dallas has officiated in 12 games this season, issuing 36 yellow and one red card.
This is his first match this season involving either Airdrie or Queen's Park.
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