If you cut out "has truly learned the lessons of 2008 and," what you have left is "she have applied those lessons to her 2016 campaign."
Obviously, she HAS applied those lessons.
Also, I'd rewrite the beginning of the sentence.
Hillary Clinton has truly learned the lessons of 2008 and has applied those lessons to her 2016 campaign.
FROM THE SAME ARTICLE: They would rather complement his business acumen than question his campaign spending.
In this case, it's compliment, not complement.
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