The problem isn’t that Harris is being held to a higher standard. The problem is that Americans think of elections the same way they think of a sporting match. It’s “my team is going to win!” not “I’m going to vote for the candidate that is best aligned with my beliefs.” A huge number of the people who are voting Republican are doing so because the Republican party is their “team,” and damn it, their team is going to win even if it kills them.
Many years ago, I was discussing politics with a coworker (always a bad idea, but whatever). It went something like this:
“So, you don’t think the less-fortunate should be able to afford medical care?” “No, of course not, everyone should be able to see a doctor.”
“You don’t think gay people should be allowed to marry?” “I’m not gay, but they can do whatever makes them happy.”
“You support the war in Iraq, then?” “I support our troops, but the war is kind of a waste.”
“We definitely should legalize weed, right?” “Um, I’d smoke it if I didn’t get drug tested.”
“So why are you voting Republican, then?” “My family is Republican; we always do.”