Largs triumphed on home soil once again with their third win in a row after taking down Irvine Meadow at Barrfields.
Thistle came away 3-1 winners in the North Ayrshire clash to push them further away from the relegation dogfight.
David Ramsay hit a double for Largs with Scott Lewis scoring the other just after the hour mark.
Connor O'Donnell scored for Meadow to bring the game back to 2-1 but Thistle extended their lead for another crucial three points.
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