1) Field for Gallup or Roper 2) Sociology 3) The study of elections 
Psephology i (from Greek psephos ψῆφος, `pebble`, which the Greeks used as ballots) is a branch of political science which deals with the study and scientific analysis of elections. Psephology uses historical precinct voting data, public opinion polls, campaign finance information and similar statistical data. The term was coined in the Un.....
The study of voting and voting patterns.
The study of voting and voting patterns.
study of election results and voting trends
the study of voting behaviour.
[n] - the branch of sociology that studies election trends (as by opinion polls)
psephology 1. The study of voting patterns. 2. The study of public elections, and statistical analysis of trends in voting; loosely, the prediction of electoral results.
noun the branch of sociology that studies election trends (as by opinion polls)
the study of elections.