That is technically the accurate terminology.
Voter suppression is a strategy to influence the outcome of an election by discouraging or preventing people from exercising their right to vote. It is distinguished from political campaigning in that campaigning attempts to change likely voting behavior by changing the opinions of potential voters through persuasion and organization. Voter suppression instead attempts to reduce the number of voters who might vote against the candidate or proposition advocated by the suppressors.
Yes, it is fraud. But voter fraud is different.
Examples of voter fraud would be when someone tries to vote more than once, under a different name.