The Revolution claimed a 1-0 victory over the out-of-form Montreal Impact, while the Chicago Fire held on for a 3-2 win at Dallas.
DC United and the Philadelphia Union played out a 1-1 draw, with the latter hanging onto their spot in the top five.
Montreal are fourth and level on points with the Union, while the Fire are sixth – also on 46 points – with New England a point back.
New England needed a 31st-minute goal from Jose Goncalves to secure their vital 1-0 victory at Stade Saputo in Montreal.
The Portuguese defender finished a scrappy goal with a side-footed finish into the roof of the net from inside the area.
Chicago held on for a 3-2 win at Toyota Stadium in Texas after surviving a late scare following a Kenny Cooper brace.
Juan Anangono opened the scoring on 25 minutes with a neat header into the bottom corner.
Mike Magee was fortunate to score his 19th goal of the season – putting him level atop the goalscoring charts – three minutes before half-time.
Brazilian Alex fired a shot towards goal, only to see it hit Magee's back and wrong foot Dallas goalkeeper Chris Seitz.
When Jalil Anibaba scored with a wonderful 25-yard curling effort, the Fire looked to have sealed the three points.
Cooper made for a nervous finish with his brace, but Chicago were able to hold on.
Philadelphia earned a point at DC United when Jack McInerney's late equaliser cancelled out Nick DeLeon's 36th-minute opener.
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