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Scott Rasmussen's Number of the Day for June 25, 2018

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By Scott Rasmussen

The Number of the Day columns published on Ballotpedia reflect the views of the author.

June 25, 2018: There has been much talk of a “Big Blue Wave” in the midterm elections but little discussion of what a wave election actually is. A Ballotpedia analysis reviewed 50 election cycles from 1918 to 2016 and determined that the party out of power must pick up at least 48 House seats to truly qualify as a wave election.

This report defines a wave election as one in which the winning party nets more seats than 80% of all election cycles in the past 100 years.

It must be noted, of course, that the Democrats could win control of Congress this fall without a wave election. Currently, the Democrats need to win 23 seats to gain control, less than half the total needed to qualify as a wave.

Ballotpedia also calculated that Democrats would need to gain "seven U.S. Senate seats, seven gubernatorial seats, and 494 state legislative seats for each group of elections to qualify historically as a wave against the president's party in November 2018.”

What Democrats need in 2018
Election group Seats needed for chamber/majority control Seats needed for a wave election
U.S. House D+23[1] D+48
U.S. Senate D+2 D+7
Gubernatorial D+10 D+7
State legislative D+525 D+494

As shown above, even a wave election in November would not be enough to give Democrats a majority of the nation’s state legislative seats or governorships.

A race-by-race analysis at ScottRasmussen.com suggests that it is quite possible for the Democrats to win enough governorships to qualify as a wave election.[2]


Each weekday, Scott Rasmussen’s Number of the Day explores interesting and newsworthy topics at the intersection of culture, politics, and technology.


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Footnotes

  1. This number was calculated in April 2018 and assumed that Republicans would have a 240-195 majority at the time of the 2018 elections.
  2. ScottRasmussen.com, "2018 Gubernatorial Races," accessed June 22, 2018