The dismissal of Reza Shah from political power changed the country’ s political structure dramatically and began in the political and social spheres a new phase of parliamentary activities, parties, movements, and social classes. These changes affected the National Consultative Assembly election and people’ s participation in electing their representatives in Tehran and elsewhere in the country, so that each of these newly-formed parties and movements interfered in it without any legal prohibition, and the election went out of government’ s control for some time. The participation of people in the relatively free elections of the fourteenth parliament was the first experience of the Iranian nation after the fall of the first Pahlavi’ s dictatorship, and it was widely welcomed. This paper surveys different parties, groups, and personalities that, freed from the difficult political conditions of the first Pahlavi, participated in the elections in Kermanshah as an important and strategic region located in western Iran. This study is based on a descriptive-analytical method and relying on documentary and library manuscripts, with analyzing the voting process, tries to find out what the influential factors in the 14th National Consultative Assembly election in Kermanshah were. The results show that unlike Reza Shah’ s era, the 14th election was not monopolized by any of the political and social forces, and the candidates were affiliated with various and opposing influential groups. In the first election of the second Pahlavi era, in order to weaken the Pahlavi court, participation increased and the centers of power especially tribes and nomads and foreign political agents conducted activities during the parliamentary elections to achieve their political goals. Therefore, this period of the election was influenced by domestic and foreign agents. So new candidates entered the parliament.