On Thursday, Tom Perez, the Democratic National Committee chairman, called for the Iowa Democratic Party to “recanvass,” or basically double-check, the results of specific precincts where irregularities had been reported.

It is not clear that the correction of any erroneous data would have much of an effect on the count of S.D.E.s. But in a race this close, even one or two delegates could matter.

Another, potentially more consequential decision surrounds how voters at satellite caucuses are being measured, which you can read more about here.

The ‘first alignment’ and the ‘final alignment’

Without getting too much into the weeds (which you can do here, here or here), for years, the only results the Iowa Democratic Party released were S.D.E.s. But this cycle they also released raw data from the so-called first and final alignments.