The situation in Washington is far more complex.
I would not count on that.
Texas House contest there were 13 categories of votes that were either illegal votes, or were legal votes and should have been counted.
Can these ballots be identified, or the person who cast the vote be determined? In Texas there were provisional votes without the correct retrieval code.
That is category 6 in the Texas case.
Find the person who cast the ballot, or you are out of luck. I don't see any dead people in the Texas contest, but there was a vote by a Norwegian, and several Nigerian-Americans who had their registration address switched to an adjacent district, where a Nigerian-American was challenging an African-American in a primary contest, and some voters were denied the right to vote.
Then Rossi has lost.
Where are the ballots.
If the Washington court adopts the standard used in Texas, then Rossi has lost unless the choice of the illegal voters is determined. "Might of won" is not going to get a new election.