In Colorado, Clinton trails Rubio by eight points, Bush by five points, and Walker by nine points among voters in the state. And 56 percent of Colorado voters viewed Clinton negatively.
Of the three states, Clinton performed best in Virginia. She trails Rubio by two points, Bush by three points, and Walker by three points among Virginia voters. And 50 percent of voters in the state viewed her unfavorably.
The poll released Wednesday marks a drop for Clinton since an April 9 Quinnipiac University poll. In the April poll, Clinton "was clearly ahead in five of the matchups and too-close-to-call in the other four," according to Peter Brown, assistant director of the Qunnipiac University poll.
The Drudge Report was quick to publicize Clinton's drop in the polls on Wednesday with a large homepage splash on the website.
Republican presidential candidate Donald Trump took an even greater hit than Clinton in the Qunnipiac poll, however. The real estate mogul had the worst favorability ratings of any Republican or Democratic candidate polled by Quinnipiac in Iowa, Colorado, and Virginia.
Quinnipiac University surveyed 1,236 Iowa voters in live phone interviews with a margin of error plus or minus 2.8 percentage points. Quinnipiac surveyed 1,231 Colorado voters in live phone interviews with a margin of error plus or minus 2.8 percentage points. The University surveyed 1,209 Virginia voters in live phone interviews with a margin of error plus or minus 2.8 percentage points.