This page contains the materials necessary to reproduce all main text and supplemental figures from "Finding DORI." It also includes a spreadsheet that contains state-year values for DORI (derived from the paper) suitable for use in research beyond replicating the work presented in this paper, as well as a copy of the online supplemental materials. **Contents** 1. barriers.csv : a spreadsheet, organized by state-years, that contains state scores across several policy dimensions (and over time) that could theoretically influence the difficulty of registering to vote. The dimensions included in these raw data are used to formulate the DORI index. 2. barriers21.doc: a Word document explaining the substantive meaning of (a) each variable [column] contained in barriers.csv, and (b) the significance of each numeric code. 3. correlates.dta: a Stata data file that contains the state-year-level daa necessary to replicate Table A1, including the state-year estimate of DORI presented in the main text. 4. correlaates.doc: a Word Document that provides substantive codes and variable descriptions for all variables contained in correlates.dta. 3. cces_combined_master.dta: a fully-merged datafile containing common content questions from the CCES plus all non-common-content items necessary to replicate main text and supplemental analyses. 4. Micro-Level Analysis Replication File: a Stata syntax file that provides the code necessary to replicate all main text analysis from the CCES. It also contains the code necessary to generate both the IRT and additive versions of the DORI scale (which are not technically themselves micro-level analyses, but are necessary for their implementation), and to merge both scales into the CCES datafile. 5. Macro-Level Analysis Replication File: a Stata .do file that provides the code necessary to estimate Appendix analyses (referenced in the main text) that assess DORI's state-year level correlates. 6. Online Supplementary Materials.doc: a word document containing all supplemental analyses referenced in the main text. **To Replicate Main Text Results** *Micro-level- Survey Data (Main Text Tables & Figures + Supplementary Material)* 1. Access the micro-level replication file (described above) and change all pathways to point to directories on your machine where you (1) keep the data and (2) wish to populate the results. Instances where you'll need to update file paths are denoted in all capital letters, in the file. 2. Download the barriers .csv file and cces .dta file, as both are required to run the analyses provided in the syntax file. 3. Run Section 1 in the syntax file. This runs the IRT procedure necessary to estimate DORI, and requires barriers.csv. It will create a new datafile containing state-year level identifiers and scores on the DORI scale (as well as a few other relevant quantities). 4. Run Section 2 in the syntax file. This merges the results of the IRT procedure into the public opinion data. This Step requires both the datafile produced in Step 3, as well as the CCES datafile. 5. Run the remaining Sections in the syntax file. This estimates all remaining main and supplemental analyses. Note that these analyses are complex multilevel models that may take several hours to estimate. Results are automatically exported as .txt files, for your convenice (i.e., to enable you to run the models and automatically populate a Results Folder with logged outputs). *State-Year Level Analyses (Table A1 & Other Quantities Referenced in Text)* 1. Access the macro-level replication file (described above) and change all file pathways to directories on your own machine where you keep the data and wish to populate the results. 2. Download the correlates.dta file and upload into Stata. 3. Run Section 1 in the .do file. This estimates the models reported in Table A1. 4. Run Section 2. This prints the results as reported in Table A1. You may alter the code to have it printed into the format you wish, or to simply view in Stata. 5. Run Section 3. This creates the marginal effects plots displayed in Figure 3.