Supplementary Information Sections Included: I. Demographics of Initial Recruitment Panel, Sample Assigned to Low-Clustered Network, and Sample Assigned to High-Clustered Network. II. Time 1 Survey: Asked of Respondents Randomly Assigned to Control Group III. Time 1 Survey: Asked of Respondents Randomly Assigned to Treatment Groups IV. Time 2 Survey: Asked of Respondents Randomly Assigned to Treatment Groups V. Content of Information Diffused Across Political Pulse Network Demographics of Initial Recruitment Panel, Sample Assigned to Low-Clustered Network, and Sample Assigned to High-Clustered Network. Initial Sample Sample Assigned to Sample Assigned to (n=756) Low-Clustered High-Clustered Network Network (n=159) (n=159) % Democrat 43.31 47.48 41.46 % Republican 37.08 33.09 39.03 % Liberal 41.36 42.75 41.46 % Moderate 17.94 19.57 16.26 % Conservative 40.69 37.68 42.28 Mean Political 5.33 (0.05) 5.45 (0.13) 5.36 (0.15) Interest (s.e.)i Mean Political 4.12 (0.07) 3.96 (0.17) 4.04 (0.19) Discussion (s.e.)ii Mean Age (s.e.)iii 4.75 (0.05) 4.48 (0.13) 4.77 (0.15) Mean Income 2.01 (0.02) 2.02 (0.06) 1.98 (0.06) (s.e.)iv
Supplementary Information Sections Included: I. Demographics of Initial Recruitment Panel, Sample Assigned to Low-Clustered Network, and Sample Assigned to High-Clustered Network. II. Time 1 Survey: Asked of Respondents Randomly Assigned to Control Group III. Time 1 Survey: Asked of Respondents Randomly Assigned to Treatment Groups IV. Time 2 Survey: Asked of Respondents Randomly Assigned to Treatment Groups V. Content of Information Diffused Across Political Pulse Network Demographics of Initial Recruitment Panel, Sample Assigned to Low-Clustered Network, and Sample Assigned to High-Clustered Network. Initial Sample (n=756) Sample Assigned to Low-Clustered Network (n=159) Sample Assigned to High-Clustered Network (n=159) % Democrat 43.31 47.48 41.46 % Republican 37.08 33.09 39.03 % Liberal 41.36 42.75 41.46 % Moderate 17.94 19.57 16.26 % Conservative 40.69 37.68 42.28 Mean Political Interest (s.e.)i 5.33 (0.05) 5.45 (0.13) 5.36 (0.15) Mean Political Discussion (s.e.)ii 4.12 (0.07) 3.96 (0.17) 4.04 (0.19) Mean Age (s.e.)iii 4.75 (0.05) 4.48 (0.13) 4.77 (0.15) Mean Income (s.e.)iv 2.01 (0.02) 2.02 (0.06) 1.98 (0.06)