What makes you think that she is more intelligent than the other Democrats? Hillary Clinton was considered brilliant as well, ditto with many other Democrat leaders- Al Gore, Joe Biden, Hank Johnson, Al Sharpton, etc.
I didn't say she is the smartest. I said she is one of the smartest. Maybe I'm wrong about the likelihood she will get nominated but I really don't think so. I also think she will be a real threat when/if she is nominated.
That depends on how much damage Pelosi can do to her in the mean time. If she doesn't learn to play ball, she could wind up an outsider in her own party.