Klobuchar joins eight other candidates who have already qualified for the debate: Joe Biden, Cory Booker, Pete Buttigieg, Kamala Harris, Bernie Sanders, Tom Steyer, Elizabeth Warren and Andrew Yang.

In the Quinnipiac University poll, Warren held a lead over Biden, 28 percent to 21 percent. Sanders and Buttigieg were the only other candidates to crack double-digits, at 15 percent and 10 percent, respectively.

The poll is a split from a CNN/SSRS national poll released on Wednesday. In that poll, Biden held a fairly comfortable lead over Warren and Sanders, with the former vice president leading the pack at 34 percent, to Warren's 19 percent and Sanders' 16 percent.

The qualification deadline for the fifth debate is Nov. 13, a week before the debate night. Details like the venue and format of the debate are yet to be announced.

So far, 9 of the 12 candidates who participated in the most recent Democratic primary debate earlier this month have qualified for the November debate, despite the DNC modestly increasing the threshold to qualify month-over-month. The new thresholds were not expected to drastically cull the number of candidates onstage from the October forum, which was the largest major-party presidential primary debate ever.

The three candidates on the October debate stage who have yet to qualify for November are former Beto O'Rourke, Tulsi Gabbard and former Julián Castro. They need to hit 3 percent in two, three and four more polls, respectively.

The Quinnipiac University poll was conducted Oct. 17-21 and surveyed 713 Democratic voters and independent voters who lean Democratic. It has a margin of error of plus or minus 4.6 percentage points.