Washington state started using the top-two system in 2008, but only this year was there any U.S. House race in that state between two members of the same party. In this year’s election, the 4th district incumbent, Doc Rogers, retired, and two Republicans who wanted to replace him placed first and second in the August 2014 primary. The only two candidates in November were Dan Newhouse and Clint Didier. The 4th district is centered on Yakima and Kennewick.
Although Washington election officials are still counting ballots, as of the evening of November 13 the state was reporting 1,974,940 votes (not counting write-in votes) in the ten U.S. House districts combined. In 2012, the vote for U.S. House in the same ten districts had been 3,006,266.
Proponents of the top-two system frequently say that general election races between two members of the same party are better for general election voters, because most districts are safe for one major party or the other, but at least when there are two candidates from the same party, the race has the potential to be unpredictable and exciting.
However, the total vote cast in the Fourth District this year for U.S. House dropped by 35.5%. For all ten races in the state combined, it dropped by a smaller amount, 34.3%. Although political junkies may enjoy congressional races in which only one party has candidates, it seems the voting public as a whole is slightly less interested in voting in such an election as in a normal election.