It will be counted, but hasn't been yet.
Minnesota has started counting the early and mail-in votes (dunno how long that will last). And it will accept ballots postmarked by Nov 3 up until Nov 10 (the 8th Circuit Court of Appeals is expected to weigh in on the latter this week).
https://www.mprnews.org/story/2020/10/26/minnesota-ballot-count-is-on-but-for-how-long
.... [processing the mail-in ballots] Its a time-intensive process. ... [somewhat described in the article]
Deputy Elections Manager Heather Bestler [in Ramsey County, MN] said if the counties didnt have two weeks to do it an extra week than normal this year it would have been a big problem, given the volume of people voting by mail. In her county, 130,000 votes have been cast already.
It would not have been possible to process, Bestler said. We dont know what the ultimate count will be for the number of absentee ballots but there wouldnt have been enough time or space to process that many ballots in the usually allotted time.
The tallies themselves wont happen until polls close on Election
... The ballots are verified and scanned into software that will automatically begin counting the vote at 8 p.m. on election night
In neighboring Wisconsin, none of those ballots can be processed until Election Day.
Then describes the long canvassing process to check the tallies ...
But if the Supremist Court arbitrarily and capriciously shuts down the counting when it looks like it might go the "wrong" way, like they did in Florida in 2000.... or is simply taking "too" long... as determined by the majority of the Supremist Court ...
So maybe my ballot might be counted. Maybe not. All depends on what the Supremist Court decides
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A more direct link to checking one's ballot status:
https://mnvotes.sos.state.mn.us/AbsenteeBallotStatusResult.aspx