I'm honestly not sure if the Associated Press has enough self-awareness left to realize what it's doing here. And I based that on my own personal experience working in newsrooms. The bias isn't a product of conspiratorial meetings in which they sit around and ask, "How can we help the Democrats and screw the Republicans in our news coverage even as we pretend it's unbiased?" In fact, they'll point to the ridiculousness of that proposition as evidence there is, in fact, no bias at all.