It was a majority of voters.
If you include all of the non-voters as tacitly consenting to it, then it's an overwhelming majority.
That's not entirely accurate; quite a few non-voters were prevented from voting in one way or another. But most non-voters chose not to vote. Quite a few were explicit about having some disagreement with the primary opponent and concluded that the two sides are equivalent.
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It wasn't even a majority of voters, it was a plurality. It was 49.8%.