Question

state two points of difference between a by election and midterm election​

Answer 1

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Members of the House are elected for two-year terms, so all 435 seats are decided during the midterm elections. Senators are elected to staggered six-year terms. A third of the 100 seats will be up for grabs in the 2018 midterm elections, while the rest will be on the ballot in 2020 or 2022.