Explore The Guardian's interactive visualization of the guiltiest parties.

Thanks to our open records laws, you can find a treasure trove of information from government agencies on the Web.

Find out what was gained and lost in terms of the occupations, genders, sexual orientation, and religious affiliations of our new crop of representatives.

Common Cause and lawyer Emmet Bondurant think it is, and Ezra Klein looks at the history of this obstructive practice.