Table 2.

Coding scheme for political affiliation.

Coding	Participant responses
Left	Communist, D, Dem, Democrat, Left, Liberal, Progressive, Socialist
Right	Conservative, GOP, R, Republican, Rep, Right, Tea Party
Independent	Independent, Independent leaning [Democrat/Republican]
Moderate	Moderate
Blank	None, no affiliation, neutral, N/A, neither, unaffiliated, [no text]
Other	Green, libertarian, anarchist, [other]

Common responses (separated by commas) given by participants to the question of their political affiliation, and how those responses were coded. Participant responses are non-exhaustive. See Data Sheets S1 and S2 in Supplementary Material to view actual participant responses.