Summary: Monday on the NewsHour, Rishi Sunak is set to become the United Kingdom's third prime minister this year. National test scores fall dramatically as a result of the COVID pandemic, erasing decades of improvements in students' math and reading skills. Plus, former prisoners who believed they could legally cast a ballot in Florida are at risk of landing back behind bars. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
