I think Harris could outraise Nelson by 2 to 1, 3 to 1, or even 5 to 1 and still not be able to get more than 45% of the vote. It remains the candidate who is the problem, and unless Nelson's negatives can be driven up to the level of Osama bin Laden's, she won't be able to win.
And in WA State, even Osama bin Laden couldn't defeat the popular Patty Murray either.