The research of factors that related to the  voting behavior on PILKADA (local election) Kabupaten Sula 2015 is interesting for two reasons; firstly, because of the tradition of disputes election passed from election to election, and secondly because sociological factors such as religion and ethnicity are not determinant of victories the canditate (Hendrata Thes) as minorities in religious and ethnic on Sula Regency. In this research using quantitative method through survey with structured questionnaire with 200 respondens, which is proportionally distributed in Sulabesi Island and Mangoli Island as island in Kabupaten Sula. Furthermore, the data are used descriptive and correlation statistic analysis. The research finding that the rational-choice determine of voting behavior such as party’s and candiate’s program on PILKADA Kabupaten Sula 2015.