Sample skews heavily democrat. 1.36 dems for every 1 republican. Income over 100k is also oversampled.
A lot of those are opposed by double digit margins. Reducing the party gap wouldn't increase the popularity that much.
.36 is a pretty big party gap, it would absolutely affect the poll.
The whole sample seems out of whack, poll looks to be an outlier.
But are registered dems and registered reps actually balanced IRL?
No, which is why it shouldn't be asked in general, ideology should be used, but if you are going to ask it with Registered and Lean they should be equal. In an opinion poll they should be looking at ideological balance from the US in general.
Regardless Quinnipiac actually weights their polls, which mean if sampling margin is off( as it appears to be with what they provide) it can be waaaay off with how they weight. Quinnipiac is normally a solid poll, this set of polls they've been running on the subject seems off.