I’m excited to announce that the Database on Ideology, Money in Politics,
and Elections (DIME) has been updated through 2020. It’s been a few years
and a lot of hard work in the making. The database has more than doubled in
size since the last release.

Version 3 of DIME can be downloaded from: https://data.stanford.edu/dime.

You can access the codebook here: dime_v3_codebook.pdf.
<https://www.dropbox.com/s/xbcufe0wb7i391s/dime_codebook_v3.pdf?dl=1>

In addition to covering a longer time period, I’ve made several major
improvements to the database:

   -

   Added comprehensive data for state elections provided by the NIMSP/CRP
   that covers through 2020.
   -

   Added comprehensive vote shares and election outcomes for both primary
   and general elections from the FEC covering 1980-2020, which have been
   parsed and standardized.
   -

   Updated the ideal point estimation algorithm to improve comparability
   across election cycles.
   -

   Implemented a new supervised machine learning algorithm to bridge
   between state and federal elections.
   -

   Updated DW-DIME scores through 2020.
   -

   Added a SQLite version of the complete database available for download.

I’m currently a one-person team with limited time and resources, but my
hope is that future updates to the database will be more frequent. I spent
a considerable amount of time paying down “technical debt” in this latest
release and I hope this will speed up the process for future releases.

Please feel free to share with others who might be interested. And, as
always, I love to hear about the ways DIME is being used!

You can cite the database as:

Bonica, Adam. 2023. Database on Ideology, Money in Politics, and Elections:
Public version 3.0 [Computer file]. Stanford, CA: Stanford University
Libraries. <http://data.stanford.edu/dime>.


Best,

Adam Bonica

**************************************************************
               Political Methodology E-Mail List
   Editors:  Yuan (Cecilia) Sui and Gechun Lin
                  <[log in to unmask]>
**************************************************************
     Send messages to [log in to unmask]
  To join the list, cancel your subscription, or modify
                 your subscription settings visit:

  https://www.cambridge.org/core/membership/spm/mailing-list

**************************************************************