Buttigieg struggles to appeal to minority voters, particularly African-Americans. As of November 2019 he had only 6 endorsements from black or Hispanic elected officials and was polling at less than one per cent among black South Carolina voters.
This was not helped by his reaction to a black man being shot by a white police officer in his constituency of South Bend, Indiana. He was accused by residents of not dealing with the issue and using it for personal gain on the campaign trail, as well as not dealing with a lack of resources for African-American residents of South Bend throughout his term.
It is nearly impossible for a Democratic candidate to win without the black vote, and while Buttigieg may be able to appeal to rural voters that feel disenfranchised by the current state of the Democratic party, it may come at the cost of a huge decrease in voters of colour.