We agree with only nuanced differences.  

Committing Voter Fraud while at the ballot box is difficult. Singularly, voting in multiple jurisdictions, or registering falsely and/or redundantly, is far more likely. Party coordination of false registration, gathering voter and transporting them to the voting location, while on the way, providing pre-marked ballots or rewarding them for voting as the organizers want, coaching groups on how to vote with false documentation, stuffing ballot boxes or stealing ballot boxes from precincts known to favor the opposition, rigging voting machines, are among some of the organized voter fraud tactics or as you define it, Election Fraud.

Both involve dealing with the ballots, directly, one way or another. 

Certainly accusations of misbehavior by a candidate, true or false, don't directly deal with ballot fraud, but rather swaying the mindset of the Voters. But, we don't hold politicians liable for the promises they make during campaigns, so what?