Kyiv International Institute of Sociology did a poll in December of Ukrainians about territorial concessions. 85% of Ukrainians don't want to concede any territory. Only 8% want to concede territory.
By region, the results are fairly similar. In western Ukraine, 88% don't want to concede territory and 8% do want to. In eastern Ukraine, 80% and 9% respectively.
By language, among Ukrainian speakers it is 89% and 7% respectively. Among Russian speakers, it is 76% and 14%.