So far in the last month before the mid-term elections Trumpie has campaigned in "ruby-red territory such as Oklahoma and Alabama. His upcoming stop, Grand Island, is located in Nebraska’s solidly conservative south-central region." AP
Why would he be preaching to the choir? I offer two joint reasons:
1) Gopies are behind in every contested Senate race. Trumpie knows it and doesn't want to be associated with "losers".
2) Trumpie does not want to get booed. He knows he is unpopular and is not going to go anywhere where there is the danger of a hostile or even lukewarm reception.