How will Biden's withdrawal and Harris nomination affect stock prices?

And so on, President Biden decided to withdraw and nominated Vice President Harris as the next candidate. It is said that Mr. Harris is not popular, but how far can he get into the remarks of “Trump full of lies” by being a former prosecutor?

But what I'm most interested in is how will it affect future stock prices no matter who becomes president? The biggest concern is which stocks and how they will influence today's news

Could it be that the semiconductor that fell out will come back?