The Federal Election Commission has this chart on its web page, showing the dates of presidential primaries and caucuses, the dates of congressional primaries, and the filing deadlines. Not every entry is necessarily correct. For example, the chart for Florida congressional primaries shows the independent filing deadline to be the date on which petitions in lieu of filing fees are due, not the actual filing deadline. Most candidates for Congress in Florida don’t use the in lieu of petition, whether they are party candidates or independents. For some reason the FEC puts the in lieu of deadline in the independent column, but not the column for partisan candidates. The FEC made the same mistake in its 2014 chart.