One of them only introduces facts. The other adds flavor. Whether or not you consider the titles relatively neutral, one does introduce bias relative to the other one.
Introducing Walz as a VP hopeful sounds like they’re describing a Palin-level government official, not someone who has been active in politics for years.
Okay then why am I accused of it while not qualifying. Seems like that’s not how it’s used by liberals, almost like this isn’t the colloquial definition