Fig. 13

a Number of ad duplicates (with the exact same creative body) versus the percentage of duplicates that are regionally-dominated (that is, they receive at least 99% of their impressions from one region). b Number of regions dominated across all regionally-dominated ads with the same text, for ad texts with only regionally-dominated versions (top) and some regionally-dominated versions (bottom). c Same as in a, but only for ads sponsored by interest groups. d Same as in a, but only for ads sponsored by candidate campaigns