Hillary Clinton and Donald Trump are tied in Colorado, a new poll shows, entering the final days of the 2016 presidential race.

The University of Denver poll released Wednesday found Clinton and Trump deadlocked at 39 percent in a four-way race, in a survey of registered likely voters conducted Saturday through Monday.

The third-party candidates combined for 15 percent with another 8 percent undecided. The poll’s margin of error is plus-or-minus 4.2 percent.

A head-to-head match between the major party candidates put Clinton at 42 percent and Trump at 41 percent, a statistical tie.

One in five voters in the poll said a Clinton victory is “not legitimate,” meaning they would not accept the results on Election Day.

Floyd Ciruli, a veteran Colorado pollster who conducted the survey, said the numbers are “reflective of the fact that this environment has turned negative for Clinton,” notably the FBI inquiry into additional e-mails with possible ties to her tenure as secretary of state.

Among voters who already cast ballots, Clinton sits in a much better position at 45 percent to 38 percent for Trump — a number that appears to support early voting figures showing Democrats with a 23,000 ballot advantage.

But among those who have not yet voted, the numbers flip — which gives Republicans hope that its voters will close the gap in the final days.

Two other polls in recent days show the race closing in Colorado with Clinton holding a three-point lead within the margins.

Elsewhere in the poll from DU’s Crossley Center for Public Opinion Research:

Democratic U.S. Sen. Michael Bennet holds an eight-point lead against Republican rival Darryl Glenn, 48 percent to 40 percent. Glenn’s campaign is touting other polls showing the race closer to a five-point margin. Either way, it represents a significant shift from earlier in the race when Bennet held a comfortable double-digit lead.

The ballot question asking whether the state should increase the minimum wage (Amendment 70) appears poised for passage with 54 percent to 41 percent against it.

An initiative to create ColoradoCare, a state-run universal health care system (Amendment 69), is headed for clear defeat with 67 percent against and only 25 percent in favor.

The medical aid-in-dying measure (Proposition 106) is winning clear support with 62 percent in favor and 32 percent against.

A question about whether to make it hard to amend the constitution (Amendment 71) is closer to the 50 percent margin needed to win. It received 53 percent support with 34 percent against.

The question about whether to increase cigarette taxes with a constitutional amendment (Amendment 72) is deadlocked at 48 percent — a byproduct of a $16 million campaign from big tobacco to defeat the initiative.

Two measures to allow unaffiliated voters to cast ballots in primary elections are winning, though the question concerning local and state primaries (Proposition 108) is sitting at the 50 percent margin with 40 percent opposed. The presidential primary question (Proposition 107) is winning with 62 percent to 31 percent against.

The DU poll used live interviews on landlines and cellphones. It featured fewer Latino voters than expected to cast ballots and also less unaffiliated voters.