“What I mean is, media bias has maxxed out; they’re not convincing anyone who is not already convinced.”
Each and every year they are convincing millions of young kids who become voters for the first time...and which takes 10-15 years to beat out of them.
I hate to break it to you, but young kids tend to be liberal by nature. This is because they are ignorant, and ignorant people are attracted to the vapid platitudes of liberalism. This is because they don't have the knowledge to distinguish between what sounds good and what actually is good.
Young kids also don't vote in any great numbers. The attempts that are laid on by the Democrats and the media every four years to turn out the youth vote never amount to anything (Rush Limbaugh has spoken of this many times). That doesn't stop them from trying, every four years, but human nature is human nature, and the 18-25 set has better things to do than go down and register to vote wherever they are living this year (don't forget, they move around a lot), find out where their polling place is, and go down there to vote for someone they're pretty cynical about anyway, even if that someone is a Democrat.