Compared to countries that just make up the official vote tallies, sure I guess.
Allowing the rich to donate large sums of money for attack ads /=/ frauding the vote.
All you need to have a fair election is authentic vote totals that were counted correctly and reflect the people's opinion as shown at the ballot box. You can argue that things like big money make the election less than ideal, but it does not destroy the "fair and free" elections status of U.S. elections, because the people are still allowed to make the final decision, and the vote reflects the people's opinion, not that of the current government who wants to stay in power for eternity.
Buying elections? That's the
only counter-argument to your point you could possibly think of?