Sort out how RCV is being handled in the AP feed, and make sure our data files and visualizations are set up to account for it

[alykat]

Related: nprapps/elections24-primaries#18

In the AP release notes:

Updated RCV Race Structure
Previously, there were two race IDs for a ranked choice race, one to capture first-choice preference results and a separate one to capture final results. Starting in 2023, races with ranked choice results will be consolidated into one race ID, which will include both first choice results and final results made available after ranked choice processing.

Retired RCV Race Type IDs
The Race Type IDs previously used for RCV ('V' for general elections, 'Y' for DEM primaries, and 'Z' for GOP primaries) will no longer be used to specify ranked choice voting moving forward.

The new data structure is laid out here: https://developer.ap.org/ap-elections-api/docs/index.html#t=Elections_Response_Data_Elements.htm&rhhlterm=rcv&rhsyns=%20

Alaska and Maine were our test cases in 2022. Start there in looking for applicable races in the test data.

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Desired process/flow:

• Election night: Display the initial results
• If a race goes to RCV (and there should be a parameter on the race that flags this — either one of the statuses or a separate flag):
  • Initially: Should note the current status in a simple way on the results embed based on that flag
  • When there's time: Manually add a footnote (via the flags sheet in the config) that this race has gone to RCV and will be decided on [date].
• When the RCV result is in:
  • Substitute in the final RCV results
  • Change the footnote to say that this is the final result after RCV

[alykat]

done in 1f7c29f