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DENVER -- Donald Trump and Hillary Clinton are tied in Colorado, according to a new poll in the battleground state.

A poll released Wednesday from the University of Denver/Ciruli Associates shows Clinton and Trump tied at 39 percent each in a four-way matchup, with Libertarian nominee Gary Johnson at 5 percent and Green Party nominee Jill Stein at 4 percent, among likely voters.

About 14 percent responded "none/other/don't know or it depends," which could be depressing the numbers behind each candidate.

Colorado is a state that has been long thought to swing for Clinton, and a key part of her road to 270 electoral votes. And her campaign only recently relaunched television advertising there. Trump, however, has continued to campaign there.

In a Quinnipiac University poll released Oct. 17, Clinton had an edge over Trump with 45 percent to 37 percent among likely voters, with Johnson at 10 percent and Stein with 3 percent support. The survey's margin of error was plus or minus 3.7 percentage points.

In Colorado's Senate race, Democratic candidate Michael Bennet is leading Republican candidate Darryl Glenn by eight percentage points, 48 percent to 40 percent.

The poll surveyed 550 likely voters from Oct. 29-31 and has an error margin of 4.2 percentage points.