Various studies in the world show that mass media plays a great role in shaping public opinion by paying great attention to certain issues in the eye of people. That is why public relation services of different organizations and governmental structures try to cooperate with mass media. It is one of the main channels of communicating with audience. This research intends to test mass media and PR’s influence in Uzbekistan in the example of political parties. The article gives univariate, bivariate and multivariate analysis of the impact of mass media and PR on political party membership number. In this cross-sectional research ten Uzbek nationwide newspapers such as O’zbekiston Ovozi, XXI asr, Milliy Tiklanish, Adolat, Xalq So’zi, Narodnoe Slovo, Pravda Vostoka, Hurriyat, Mohiyat and Jamiyat published in 2014 were studied by its amount of stories, prominence (length and placement of stories) and valence (depiction of a political party in stories). Altogether, 2260 stories with strong and direct connections with the political parties were picked up from the newspapers. In total there were proposed 4 hypotheses that examine some other more factors which have impact on the party membership number along with PR and mass media.