Are polls from Republican-leaning firms more favorable to Trump?

Average of all national presidential polls conducted in October, polls conducted by right-leaning firms, and polls conducted by non-right-leaning firms

Table with 4 columns and 5 rows.
ScenarioTrumpHarrisMargin
All polls46.2%49.2%D +3.0
Republican-leaning46.4%48.6%D +2.0
Non-Republican-leaning46.1%49.5%D +3.4
All polls vs. Republican-leaningR + 1.0
Republican-leaning vs. non-Republican-leaningR + 1.4