We love to imagine USA as this improved and developed nation with high regard of freedom. But in reality, they are lacking that so much, they are a backwards nation, which means a female that is coloured would be pretty difficult to hit. Hell they preferred Trump over a women, although that woman was Hillary Cliton so I do not really blame them.
Long story short, Kamala would lose if she was the candidate, because she is a woman, and she is a person of colour, and it is greatly obvious that USA doesn't like that in bulk. Maybe it would be possible if she got the votes of millions of women who didn't voted, but that is a tough task and would require a lot of hard work on campaign.
This is the most ridiculous excuse that I have ever heard regarding the POTUS election. Kamala is unelectable not because of her color or gender. She is unelectable because of her extreme-leftist views. Her gender and color actually helps her in the election, as the opponents are scared of attacking her due to the fear of being branded as racist or patriarchist. The same with Hillary as well. I would rate Hillary as one of the most corrupt politicians in the United States. She couldn't even win the primaries and had resorted to rigging the election in the end, in order to defeat Sanders.
There are female democrats of color, who are electable. I am talking about moderates such as Nikema Williams and Mary Peltola. But these members are considered as too low in the picking order to have a chance at POTUS. And if the Americans were that racist, they would have never elected Barack Obama as the POTUS (and that too two times).