You should properly rephrase this to: He went on to win the election by voter Fraud. Had Nixon been of such low moral character as Al Gore he could have contested the election and would have WON. Nixon knew unlike Gore that while this was undeniably true it would have harmed the country so he stepped aside and ran again later.
A lot of people believe Gore should have run away with the election. By using that yardstick, he did very poorly by coming in a close second.
Can you refer me to any articles regarding alleged voter fraud in the 1960 Presidential Election? I'm not aware of this notion...