MIAMI (CBSMiami/AP) – It’s coming down to the wire in a tight Florida Senate race which pits a Democratic incumbent against a Republican challenger.

GOP candidate U.S. Rep. Connie Mack is trying to keep Senator Bill Nelson from winning a third term in office. Several polls have put Nelson ahead but Mack’s campaign has predicted that Mack will narrowly defeat the Democratic incumbent.

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Nelson will be with President Obama when he makes a campaign appearance in Hollywood on Sunday afternoon. He plans to spend Monday sign-waving in Central Florida.

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Mack is campaigning in New Smyrna Beach and Lakeland on Sunday. He is also scheduled to appear on the Fox News Channel.

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