Arizona requires ballot-qualified parties that intend to place a presidential nominee on the November ballot to submit their presidential elector candidates by May 30. No other state requires such early submission of presidential elector candidates.
On May 30, the Democratic, Green, Libertarian, and Republican Parties submitted their candidates for presidential elector. Americans Elect did not submit any candidates for presidential elector. This was no surprise, given the May 17 announcement that Americans Elect won’t nominate anyone for President this year. If Americans Elect had had the slightest inkling that it might change its mind about that, it would have submitted candidates for presidential elector. They could always have withdrawn later.