政治學者對選民投票行為研究的投入及努力，無非試圖回答下列三個問題：第一是為何有的選民去投票，有的選民沒去投票？第二是為何出席投票的選民，有些人投某甲候選人，有些選民投某乙候選人？第三是為何某甲候選人以壓倒性多數或些微票數險勝，而不是某乙候選人？絕大多數的選民投票行為研究都側重在第二個問題的探討。而本文所探討的問題是第一個問題，台灣選民中為何有人去投票？有人不去投票？亦即影響台灣選民投票參與行為的因素有哪些？本文研究發現年齡、學歷、政黨認同感、公民責任威以及社會涉入程度等五個變項，是影響台灣選民投票參與行為的關鍵變項。

Political equality and political Participation are both basic democratic ideal. Now, low voter turnout is a serious democratic problem for many developed countries. As political scientists have also known that low voter turnout is systematically in favor of citizens with higher incomes and better education. Because the citizens with higher incomes, better education and older age well haven higher turnout. Were these research outcome good-of-fit Taiwan's experience? The article is a respond to the question. And, find that age, education, party identity, civil duty and social involvement are key variables to explain the citizen turn out or not.