You have permission to edit this article.With exactly 13 days remaining before Election Day, San Francisco voters had cast more than 150,000 ballots as of Wednesday and continued to maintain a strong precedent of voting by mail.The number of ballots collected so far this year is about four times higher than in the Nov. 2016 election, according to John Arntz, the director of the San Francisco Department of Elections. So far, 31 percent of registered voters have weighed in.“Ninety percent of ballots come back to us in the mail, and on Election Day we’ll have a large amount of people going to...…You have permission to edit this article.With exactly 13 days remaining before Election Day, San Francisco voters had cast more than 150,000 ballots as of Wednesday and continued to maintain a strong precedent of voting by mail.The number of ballots collected so far this year is about four times higher than in the Nov. 2016 election, according to John Arntz, the director of the San Francisco Department of Elections. So far, 31 percent of registered voters have weighed in.“Ninety percent of ballots come back to us in the mail, and on Election Day we’ll have a large amount of people going to...WW…