TAMPA, Fla. (Reuters) - President Donald Trump and Democratic rival Joe Biden showcased their contrasting approaches to the resurgent coronavirus pandemic as they rallied supporters on Thursday in the battleground state of Florida with the clock winding down to Election Day.Opinion polls show Biden with a significant edge nationally, but with a tighter lead in the battleground states that play a decisive role in the final result. A Reuters/Ipsos poll released on Wednesday showed Trump had essentially moved into a tie with Biden in Florida, with 49% saying they would vote for Biden and 47% for the president. With its 29 electoral votes, the state is a major prize in Tuesday’s election. Trump’s victory in Florida in 2016 was vital to his surprise election win. Thousands of people, many of them without masks, crowded together at an outdoor event in Tampa on Thursday to hear Trump mock his opponent, the former vice president.