⁹ These statewide samples were 702 in 1964, 573 in 1968, and 839 in 1972.

¹⁰ Some of these data have been previously reported in Ranney, Austin, “Turnout and Representation in Presidential Primary Elections,” American Political Science Review, 66 (March, 1972), 24–26, 34–36CrossRefGoogle Scholar.

¹¹ Actual vote figures were obtained from the Wisconsin Blue Book for 1966, 1969, and 1973. Total voting age population is reported in United States Department of Commerce, Statistical Abstract of the United States (Washington, 1974)Google Scholar, Table 614.

¹² Studies showing overreported voting ranging from 2 to 27 per cent are collected in Adamany, David and Dubois, Philip, “The ‘Forgetful’ Voter and an Underreported Vote,” Public Opinion Quarterly, 34 (Summer, 1975), 227CrossRefGoogle Scholar note 1. Many factors produce voting overreport; but actual voter misrepresentation is usually set at 2 to 8 per cent, much lower than total overreport. Campbell, Angus et al. , The American Voter (New York: John Wiley and Sons, 1960), pp. 94–95Google Scholar; Clausen, Aage R., “Response Validity: Vote Report,” Public Opinion Quarterly, 32 (Winter, 1968), 594–602CrossRefGoogle Scholar; Dinerman, Helen, “1948 Votes in the Making—A Preview,” Public Opinion Quarterly, 12 (Winter, 1948), 585–598CrossRefGoogle Scholar.

¹³ The only published analysis of underreported voting is apparently that of Adamany and Dubois.

¹⁴ In 1964, 72.5 per cent of voters participated in the Democratic primary; 72.3 per cent of the survey sample reported casting Democratic ballots. In 1968, the actual and sample survey Democratic vote was respectively 59.9 per cent and 64.7 per cent.