Scraper for Chicago runoff election results

chicago_elections_scraper.rb

require 'json'
require 'nokogiri'
require 'open-uri'

results = []

open("http://www.chicagoelections.com/ap/results.htm") do |req|

  doc = Nokogiri::HTML(req.read)
  race = {:updated => doc.css("#ResultsContainer")[0].text.sub(/Last Updated: /, '')}

  doc.css("table")[2..-1].each_slice(2) do |tables|
    race[:contest] = tables[0].css("#contest").text

    meta = tables[0].css("#processed").text.match(/^(?<reporting>\d+) out of (?<total>\d+) precincts \((?<pct>[.\d]+) %\)/)
    race[:precincts_reporting] = meta['reporting'].to_i
    race[:total_precincts] = meta['total'].to_i
    race[:pct_reporting] = meta['pct'].to_f

    race[:candidates] = tables[1].css("tr").map do |row|
      {:name => row.css("#cand").text,
       :votes => row.css("#votes").text.gsub(/,/, '').to_i,
       :pct => row.css("#pct").text.gsub(/ %/, '').to_f}
    end

    results << race
  end

  puts JSON.pretty_generate(results)

end