The Capitals nearly took the lead with 4:26 left before the break.
With under two weeks remaining, the Capitals took second place from the Islanders and kept it.
Instead, the Capitals picked up the tempo and took control for the next 7 minutes.
The Capitals did not take a shot until 3 minutes 37 seconds was left in the first period.
Iafrate, who now has five goals for the series, scored twice in the first period when the Capitals took a 3-1 lead.
The Capitals have taken two-game leads five times in other series.
Particularly when the goals came after the Capitals (17-16-3-0) had taken a 3-0 lead after two periods.
Hogue got the winner after it appeared that the Capitals had taken control of the puck in their own end.
The Capitals took the biggest stride in their history in a rather unlikely season.
Capital takes two forms in the brokerage industry.