Early voters line up in battleground Florida

On Monday morning, voters lined up outside polling places across Florida to cast their ballots. Hundreds of people, most wearing face masks, stood in pouring rain outside the public library in Coral Gables, a majority-Hispanic city near Miami.

President Donald Trump, running out of time to change the dynamics of a race that opinion polls show him losing, will visit Arizona on Monday after holding a rally in Nevada on Sunday and urging his supporters to vote amid signs that Democrats are leading the surge in early voting.

His Democratic challenger Joe Biden, who campaigned on Sunday in North Carolina, another state that could favor either candidate, will spend the day at his home base in Delaware, while his running mate, U.S. Senator Kamala Harris, heads to Florida to encourage supporters to vote early.

Florida is widely seen as a must-win for Trump, whose path to victory becomes razor-thin if he loses the southern state. The state's prize of 29 electoral votes is tied with New York for third most, behind only California and Texas, in the race for the 270 Electoral College votes that determine the presidential winner under the U.S. system.

An Oct. 7-14 Reuters/Ipsos survey of the state showed Biden with 49% of the support and Trump 47%, within the survey's credibility interval of 4 percentage points.