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@@ -9,12 +9,14 @@ This file contains the data behind the story [Story hed](https://fivethirtyeight
 
 The linked `Anti Democracy Catalog` google sheet contains a list of voter restriction bills that have been introduced in state legislatures across the country, along with third-party partisan audits conducted. This database looks at bills introduced in legislative sessions that were active in 2021 and is based on data from the Brennan Center for Justice and the Voting Rights Lab, as well as FiveThirtyEight's own research.
 
+### Data Dictionary
+
 Column | Definition
 --- | ---
 State | State where bill was introduced
 Bill | Name and link to LegisScan entry for this bill. Crossed out bill names indicate TKTKTK.
 Party | --
-Category | --
+Category | Category of bill, detailed in [the table below](#category-data-dictionary)
 Brennan Topic(s) | --
 What It Does | --
 Status | --
@@ -22,3 +24,14 @@ Status Last Updated | --
 Notes | --
 
 Green highlighting indicates TKTKTK. Yellow highlighting indicates TKTKTK.
+
+### Category Data Dictionary
+Category | Definition | Example
+--- | --- | ---
+Limit voting options | Bills that create any kind of barrier to voting by reducing or eliminating a method of voting or voting assistance | [Minnesota House Bill 943](https://legiscan.com/MN/bill/HF943/2021), which would ban ballot harvesting and require agents who assist voters in submitting ballots to sign a form and provide personal information
+Expand voter ID requirements | Bills that introduce new requirements for ID to vote or register, or limit what kind of ID is acceptable | [Colorado House Bill 1086](https://legiscan.com/CO/text/HB1086/id/2294598), which would require all registered voters to provide proof of citizenship to vote
+Limit voting time | Bills that reduce the time to cast a ballot, whether in person or absentee, on voting day or in advance | [Georgia House Bill 512](https://legiscan.com/GA/bill/HB512/2021), which would reduce the early voting period by one day and reduce voting hours
+Purge voter roll | Bills that introduce new requirements for triggering a voter roll purge or require more frequent purges | [Virginia Senate Bill 1422](https://legiscan.com/VA/bill/SB1422/2021), which would require the State Registrar of Vital Records to send weekly, rather than monthly, updates of deceased residents to the Department of Elections and orders the general registrar to “promptly” remove voters who are deceased or convicted of a felony
+Limit or criminalize election official role | Bills that make certain behavior by election officials a crime or reduces the authority of election officials | [Wisconsin House Bill 198](https://legiscan.com/WI/text/AB198/id/2347768), which would prohibit election officials from correcting mistakes on absentee ballot certificates and creates penalties if the election official fails to post the error online
+Create or reinforce partisan election roles | Bills that shift authority from officials to partisan bodies | [Arizona House Bill 2891](https://legiscan.com/AZ/bill/HB2891/2021), which would remove election litigation power from the secretary of state and gives it to the attorney general until 2023
+Increase voter surveillance | Bills that require or allow new methods of surveillance of voters or increase authority of poll watchers | [Tennessee House Bill 1221](https://legiscan.com/TN/bill/HB1221/2021), which would require a list of absentee-ballot applicants to be publicly posted