Changes

Requests to the server become very slow when the page number is high. At a restriction rate of 1000 records/minute and 200 records per page, the page requests are slower than the restriction (i.e. no throttling back is required) beyond about page 20. This maybe due to a lack of database caching (particularly, the php scripts may be requesting data from the first page each time). This is particularly problematic when requesting the candidates list, which for most research purposes will be needed as a starting point for subsequent requests.  One work-around this problem is to request candidates by state. The <tt>state_postal_code </tt> variable , requested as <tt>state</tt> unless in a sort, (presumably) follows the [http://www.usps.com/ncsc/lookups/usps_abbreviations.html USPS state abbreviation convention]. The codes provided in [http://www.edegan.com/repository/USPS-StateCodes.txt USPS-StateCodes.txt].