Sam Hoskins scored twice in the second-half to add to Jon Guthrie’s long-range strike just before half-time, as Town made it three wins on the spin.
It was far from a vintage performance from Jon Brady’s men, but they did enough to emerge as deserved winners.
Here are Jeremy Casey’s player ratings from Sixfields….
9. Kieron Bowie
Similar to his performance at Wimbledon on Tuesday, you cannot fault the Fulham loan man's effort and commitment. But, one snapshot aside that flew just past the post in the first half, he spent a lot of the time on the periphery of the action ... 7 Photo: Pete Norton
10. Louis Appéré
Appéré is an absolute workhorse. Hassles defenders, runs and runs all game and does so much unselfish work, which is definitely a key part of the Cobblers' current success. But he must be frustrated by his lack of scoring chances ... 7 Photo: Pete Norton
11. Sam Hoskins
10 goals in the bank by the middle of September... sensational stuff. Hoskins is playing better than he has ever done. His confidence his high, his work-rate is second to none, and his decision-making (not always the best in past) is excellent. He's even getting luck go his way now as well! ... 8.5 CHRON STAR MAN Photo: Pete Norton
12. Harvey Lintott
Thrown into the action in the first half after Tyler Magloire's injury, Lintott once again showed just what an accomplished full-back he is ... 7 Photo: Pete Norton