Polls in Washington’s Senate race between Sen. Patty Murray (D-Wash.) and GOP candidate Tiffany Smiley showed a close race in the closing weeks, but Murray won by roughly 15 percentage points.

One is a poll from Washington State showing challenger Tiffany Smiley down by just three points, 49 percent to 46 percent, to five-term incumbent Patty Murray. The last two polls in the race ...