Very simple start to map using data from the SF Planning commission to make a map with d3. One problem was there was a little of Alameda in the Data so I cleaned that out and made it a little more web mapping friendly.
Use this or make your own maps from the source data http://www.sfgov2.org/index.aspx?page=2618 to help people better contextualize SF Politics.
Modified http://d3js.org/d3.v3.min.js to a secure url
Modified http://d3js.org/topojson.v1.min.js to a secure url
https://d3js.org/d3.v3.min.js
https://d3js.org/topojson.v1.min.js