The 21st in our series takes us to a deep red state that wasn't nearly as supportive of Donald Trump in 2016 as it has been for other recent Republican nominees.
Delay is announced shortly after frontrunner Joe Biden called for the convention to be rescheduled
Three ratings were changed in each case.
There are now six vacancies; Democrats control the body with 232 seats
The Ocean State is the 20th in our series leading up to the 2020 presidential election.