"(Elliott) was outstanding," said Voracek, who has 16 points (three goals, 13 assists) in his past 11 games, and seven assists on the three-game trip. "They had a lot of chances the first 10 minutes but we knew if we could survive that we would have a chance to win."
Raffl scored for the third straight game 45 seconds into the second period to make it 2-0, tapping in a backhand pass from Voracek.
Giroux made it 3-0 on the power play at 9:52 of the second period, one-timing a Gostisbehere pass past the blocker of Markstrom from just above the left face-off dot.
"When it's clicking like that, you can tell we were on," Gostisbehere said of the power play.
Boeser scored his 14th of the season on a rebound with 20 seconds left in the second period to make it 3-1.
Simmonds scored into an empty net with 1:02 remaining.