There’s special ballot that you can vote for the President only. Note the link has been removed.
Presidential-only absentee ballot - Minnesota Secretary Of ...
Search domain www.sos.state.mn.us/elections-voting/other-ways-to-vote/presidential-only-absentee-ballot/https://www.sos.state.mn.us/elections-voting/other-ways-to-vote/presidential-only-absentee-ballot/
To apply for a Presidential-only Absentee Ballot, complete this application and return it to your county election office. You will be mailed a ballot that contains only the candidates for U.S. president and vice-president. Your returned ballot must be received by Election Day (November 3, 2020).
Minnesota isn’t in play.
What states other than MN have this?
“Presidential-only absentee ballot - Minnesota Secretary Of ...
Search domain www.sos.state.mn.us/elections-voting/other-ways-to-vote/presidential-only-absentee-ballot/https://www.sos.state.mn.us/elections-voting/other-ways-to-vote/presidential-only-absentee-ballot/
To apply for a Presidential-only Absentee Ballot, complete this application and return it to your county election office. You will be mailed a ballot that contains only the candidates for U.S. president and vice-president. Your returned ballot must be received by Election Day (November 3, 2020).”