Follow this link for a cool new SSP feature: a sortable calendar containing congressional filing deadlines, primary dates and run-off dates. The best part is that you can click on the column headers to re-arrange the list. So you can view things alphabetically by state, or chronologically by filing deadline or primary date.
We've drawn on data collected by the FEC (PDF), so it should be accurate. But if you notice anything that looks amiss, kindly let us know. Please note, though, that the SSP calendar does not contain presidential data. The FEC file does have that information, and the Green Papers does an admirable job of keeping up-to-date with the constantly shifting presidential primary calendar.