Response Scale Format Average Nonresponse for 4 Candidate Favorability Items Use of midpoint rating (“5”) for 4 Candidate Favorability Items Average Nonresponse for 3 Economic Issue Ratings Use of midpoint rating (“5”) for 3 Economic Issue Items
1–10 scale 19.4%  *** 20.6%  ***
0–10 scale 16.1% 17.3% 20.3% 52.6%
0–5–10 scale 11.7% 21.1% 13.9% 55.2%