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Performance Index
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    A U.S. flag waves gently on a tall silver pole. The sky behind it is blue, with a few fluffy white clouds.

    03.10.2022

    2020 Was a Banner Year for U.S. Election Administration

    MIT’s Election Performance Index shows improvement across the board.

    By Claire DeSoi

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    Two Black people stand behind a white table. They are both checking through clipboards with a pen. There is a glass jar in front of them with little American flags in it, and little flags line the front edge of the table as well.

    08.23.2021

    Evaluating Election Performance in the Era of the Big Lie

    As Team MEDSL begins its sprint to get the 2020 version of the EPI out the door, I offer nine thoughts about the subject.

    By Charles Stewart III

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  • Data Completeness
  • Disability- or Illness-related Voting Problems
  • Voter Registration
  • Vote by mail and absentee voting
  • Online registration and voter tools
  • Voter turnout
  • Voter wait time
  • About the EPI
  • Voter list maintenance
A satellite image of the United States at night, with the major cities and metro areas lit up.

06.01.2022

Encouraging Voter List Maintenance Efforts with an ERIC Indicator

EPI New Indicator Alert!

By Joelle Gross

A U.S. flag waves gently on a tall silver pole. The sky behind it is blue, with a few fluffy white clouds.

03.10.2022

2020 Was a Banner Year for U.S. Election Administration

MIT’s Election Performance Index shows improvement across the board.

By Claire DeSoi

A pair of eyeglasses with thick brown translucent frames rests, upside down, on an open notebook, where one of the pages is full of scribbled notes.

12.16.2021

A Deep Dive into Absentee Ballot Rejection in the 2020 General Election

By Declan Chin

A white USPS truck is stopped at the curb in a suburban neighborhood.

12.14.2021

How Policy Influenced the Partisan Divide over Voting by Mail

By Joelle Gross

A backlit image of a hand dropping a piece of paper into a ballot box.

11.17.2021

The Eyes and Ears of Polling Places

A brief introduction to the SPAE

By Joelle Gross

A dirty, beat-up orange street sign leans againts a beige wall. Black letters on the sign read "SURVEY PARTY."

10.06.2021

Using the Census

A look at data from the 2020 Voting and Registration Supplement to the Current Population Survey

By Jack Williams

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Elections
Performance Index
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A PROJECT OF MIT ELECTION DATA & SCIENCE LAB
©2023 Massachusetts Institute of Technology Election Data + Science Lab | Accessibility