Get typeId here: http://api.votesmart.org/Office.getTypes?key=8be7942478e869e453aa7a5b48de02eb

Then get officeId here: (e.g. L for state legislatures) http://api.votesmart.org/Office.getOfficesByType?typeId=L&key=8be7942478e869e453aa7a5b48de02eb

Then get candidates state-by-state like this:

State Senate (officeId=9 MA http://api.votesmart.org/Candidates.getByOfficeState?officeId=9&stateId=MA&key=8be7942478e869e453aa7a5b48de02eb

House of Reps (officeId=8) MA http://api.votesmart.org/Candidates.getByOfficeState?officeId=8&stateId=MA&key=8be7942478e869e453aa7a5b48de02eb

State Assembly (officeId=7) CA http://api.votesmart.org/Candidates.getByOfficeState?officeId=7&stateId=CA&key=8be7942478e869e453aa7a5b48de02eb

Get each candidate's basic contact info like this: http://api.votesmart.org/Address.getCampaign?candidateId=81542&key=8be7942478e869e453aa7a5b48de02eb

Get each candidate's website and email info like this: http://api.votesmart.org/Address.getCampaignWebAddress?candidateId=81542&key=8be7942478e869e453aa7a5b48de02eb

NOTE: change $key in lib/slipphp/config.php