Rothwell Corinthians require six points from their final three matches to secure promotion to the ChromaSport & Trophies United Counties League Premier Division.
Shawn Sparrow’s team sit in third place in the Division One table after they claimed a 3-0 victory at Bourne Town.
Corinthians are a point behind Peterborough Sports, who have now completed their campaign, but two more victories will ensure no-one else could catch them as they bid for elevation.
At Bourne, they took the lead through Cameron Starsmore after just five minutes.
The hosts had Aris Placis sent off in the second period and Corinthians rounded things off in stoppage-time when Chris Clarke struck twice.
Sports completed their league campaign by winning 3-2 at Raunds Town.
Matt Barber and Ash Meeks gave the visitors a 2-0 lead but the Shopmates battled back with Luke Stevens on target before Ali Nyang levelled from the penalty spot.
But Sports secured all three points thanks to Matt Simpson’s goal on 83 minutes.
Burton Park Wanderers claimed a crucial 6-1 victory over rock-bottom Stewarts & Lloyds at Latimer Park as they moved four points clear of the re-election zone.
Jordan Middleton gave S&L the lead after five minutes but Wanderers hit back to lead at the break through Pernell Taylor-Jacob and Curtis Taylor-Jacob.
Curtis Taylor-Jacob made it 3-1 two minutes into the second period and Wanderers ran away with it as Wayne Brown and Ollie Tilley made it 5-1 before Curtis Taylor-Jacob complete the scoring and his hat-trick.
Rushden & Higham United went down 4-0 at champions Northampton Spencer, who were presented with the league winners’ trophy after the game.
Goals from Ryan Dove, Ryan Lovell, Jack Bartley and Luke Bartley sealed the home win.
In Friday night’s local derby, Irchester United made it five wins from their last six games with an impressive 2-0 success at Thrapston Town.
Two goals from Jared Harewood proved decisive for Steve Sargent’s team at Chancery Lane.