By Andy Silvester RISHI Sunak and Tory candidates across England will be praying for a national morale boost when England play Serbia in the opening match of their Euro 2024 campaign this weekend. The Prime Minister sits around 20 points back in most polls but some in his party believe a few England wins could put the country in a better mood – and perhaps a more forgiving one. Sam Holland, the Tory candidate in Dagenham and Rainham, told City A.M. that “if people feel we’re winning and doing well, it creates a sense of euphoria – and that might start to have an impact on the campaign.” Eviden…