Source is here: https://yougov.co.uk/topics/politics/survey-results/daily/2025/02/20/c33bd/1
That source allows you to see the results according to political affiliation. Pluralities of supporters of the Conservatives, Labour, and Lib Dems think that supporting Ukraine is more important.
The exception is Reform UK, whose supporters think that good relations with the USA are more important than supporting Ukraine.
Trump is a temporary symptom. The problem is that a third of the US sees his evil bullshit and fucking loves it; another third sees his evil bullshit and remains completely apathetic to it and can’t be bothered to so much as waddle over to their mailbox to submit a ballot in opposition to it; and the remaining third is only given a lesser-evil option that comes with some seriously demotivating baggage like fucking genocide.
And even if it’s less genocide than the other guy, shit like that is always going to make a major dent in that third’s turnout, paving the way for the situation we’re in now.
Even if Trump is actively being assassinated as I post this (yo, god: pretty pretty please?) some other evil bigot will fill the vacuum. Now, if he gets assassinated too, we might be on to something: sending the message that being an evil oppressive sack of shit comes with a major mortal liability is the short term fix we absolutely need, but we’ve all seriously underestimated the degree of enthusiastic evil in the average voter.