A SurveyMonkey poll of 15 battleground states was reported in the Washington Post on October 18. Clinton won the two-way race in Colorado by 9 points and the four-way race by 7 points.
Senate incumbent Michael Bennet was cruising to re-election with 52 percent of the vote compared to 42 percent for Republican Darryl Glenn.
The latest Quinnipiac Colorado survey has Clinton ahead 45 percent to 37 percent in a four-way race from a poll conducted October 10-16 (in the two-way race, Clinton is ahead 11 percent).
Clinton’s four-way number increased one point since September 22 (before the 1st debate, Sept. 26) and Trump’s support went down 5.
Bennet leads Glenn 56 percent to 38 percent, a major widening of the race since the September 23 Quinnipiac poll (Bennet 52% to Glenn 43%, a 9 point shift).
Hence, in two polls with very different methodologies, Clinton and Bennet are headed toward substantial wins.
Washington Post: Clinton holds clear advantage in new battleground polls
Quinnipiac University Poll, October 18, 2016