Ehlers has 11 points (five goals, six assists) during a six-game point streak.
"[Ehlers] is a key player for us, offensively," Winnipeg coach Dave Lowry said. "He's one of the drivers, and when you don't have him in your lineup, you miss him. And when you have him in your lineup, [Ehlers] is dialed in and he's playing his game. You notice him. Tonight, he was able to get himself into a game. He created some offense, he used his feet to beat guys and allowed his skill to take over."
Pierre-Luc Dubois, Kyle Connor and Paul Stastny each had a goal and an assist, and Connor Hellebuyck made 31 saves for the Jets (34-28-11), who ended a four-game skid (0-3-1) and remained seven points behind the Dallas Stars for the second wild card into the Stanley Cup Playoffs from the Western Conference. The Stars won 6-4 at the Chicago Blackhawks on Sunday.
"Our goalies, not just [Hellebuyck], [Eric Comrie] as well, they've been fantastic all year," Ehlers said. "They give us a chance to be in every single game. It's up to us to give something back. And tonight, [Hellebuyck] showed that again, made a huge save at the end on the rebound to keep it a 4-3 game."
Brady Tkachuk had two goals and an assist, and Josh Norris had a goal and an assist for the Senators (26-40-6), who have lost three in a row. Mads Sogaard made 21 saves in his second NHL start.
"We really wanted those two points tonight," Tkachuk said. "As you could tell, we were fighting to the very last second. This one's going to be a frustrating one, but we have to move past it."