If that is what the Washington state law says is the remedy, yes!
I don't know if that is what the state laws says though.
Anyone know the bottom line on that issue?
I'm trying to find the law, but the legislature's website just went down (naturally).
http://www.leg.wa.gov/RCW/index.cfm?fuseaction=chapterdigest&chapter=29A.68
I think the judge's decision is certainly defensible.
The courts have the power to set aside an election, but
the only specific remedy the law mentions is to declare the "losing" candidate elected "[i]f in any such case it shall appear that another person than the one returned has the highest number of legal votes." It doesn't specifically grant the courts the power to order a "revote."
However, if an election must be set aside due to misconduct, but the evidence is insufficient to declare the other candidate elected, the office would be vacant and that vacancy would be filled at the next general election according to law.