Davidson said advertisers and political campaigns can also search and sort based on demographics and geography. In searching the city of Seattle, for example, Facebook estimates a potential reach of more than 800,000 likely, liberal leaning individuals, compared to more than 50,000 likely conservatives. Davidson explained campaigns are primarily focused on targeting persuadable voters, who are likely to be found in the moderate or basic liberal or conservative groupings, as opposed to the extreme categories on either side.