Figures & data
Figure 1 Polity Score of the United States, 1901-2020
Source: Center for Systematic Peace: The Polity Project Homepage.
Figure 2 Liberal Democracy Index of the United States, 1900-2020
Source: V-Dem Dataset, Version 11.1.
Figure 3 Electoral Democracy Index of the United States, 1900-2020
Source: V-Dem Dataset, Version 11.1.
Data Availability Statement
The data that support the findings of this study are openly available in Coppedge, M., Gerring, J., Knutsen, C. H., Lindberg, S. I., Teorell, J., Alizada, N., Altman, D., Bernhard, M., Cornell, A., Fish, M. S., Gastaldi, L., Gjerløw, H., Glynn, A., Hicken, A., Hindle, G., Ilchenko, N., Krusell, J., Luhrmann, A., Maerz, S. F., Marquardt, K. L., McMann, K., Mechkova, V., Medzihorsky, J., Paxton, P., Pemstein, D., Pernes, J., von Römer, J., Seim, B., Sigman, R., Skaaning, S., Staton, J., Sundström, A., Tzelgov, E., Wang, Y., Wig, T., Wilson, S., and Ziblatt, D. 2021. “V-Dem [Country–Year/Country–Date] Dataset v11” Varieties of Democracy Project at https://doi.org/10.23696/vdems21. Another data that supports the findings of this study are openly available in Center for System Peace: INSCR Data Page at https://www.systemicpeace.org/inscrdata.html.