The survey was conducted before the party was engulfed in a "civil war" over Jeremy Corbyn's suspension.
The country's largest Covid-19 study, by Imperial College London and Ipsos MORI, found the virus has been doubling every 29 days.
Survey points to catastrophe for Labour and historic defeat.
America ranked almost as high as Iran and Russia.
We looked across 13 countries and over 50,000 interviews on 28 questions – asking people to guess at immigration levels, crime rates, teenage pregnancy, obesity levels and more
Do you "overestimate" what you worry about?
And imagine if 16 & 17 year olds could vote.
Women and middle-age voters are deserting Theresa May.
Corbyn currently has an approval rating of -33.