Ballots Not Counted in LA Primary Because "Extra Box" Not Marked

In addition to the normal confusion over voting in presidential primaries, the New York Times notes that some independent Los Angeles County voters did not have their vote counted because they failed to mark "an extra box" on their ballot.

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The article notes "One of the more significant problems occurred in Los Angeles County, where independent voters in at least 15 precincts said they were never told they had to mark an extra box on their ballots for them to be counted."