The piece indicates that there will be an option off political ads entirely, not to block political ads by partisan affiliation. (The latter is both more complex to even superficially inplement and would be rather ineffective because SuperPAC ads are formally unaffiliated with either parties or candidates.)
Also FYI: The adjective for “Associated with the Democratic Party” is “Democratic”, just like the adjective in the party name. “Democrat” is the noun form.
EDIT: I'm going to quote and respond to a dead reply, because it makes a common point which deserves a response rather than downvoting to oblivion:
> Yes, but Republicans consistently use the term 'Democrat' instead of 'Democratic' because they don't want to imply that Democrats have a connection to the concept of Democracy.
> It's a shibboleth; folks who instinctively say "Democrat" are reliably far-right.
While this is correct as to the origin and the tactical employment of the usage, it is not a reliable indicator because lots of people who aren't far-right or Republican partisans are exposed to media in which far-right (or at least solidly Republican partisan) voices which embody this tactic are common and don't realize that is what it is, and adopt the pattern from that source.
The ones who persist after correction are doing it intentionally and tactically, though.