The search is on in Zephyrhills, Fla., for the lucky person who entered a Publix supermarket in recent days and purchased the winning Powerball ticket worth $590.5 million.Today is the earliest the ticketholder can come forward because Florida's lottery headquarters in Tallahassee were closed for the weekend. Under state law, the winner's name, age and hometown will be made public after turning in the winning ticket.The winner will have to decide whether to take the annuity or a lump sum, which comes out to $370,896,780.54. The lottery withholds 25 percent to pay federal taxes, but there's no state tax in the Sunshine State, which means someone is going to walk away with about $278 million after taxes.If the winner or winners decide to receive the lump sum, they must claim the cash 60 days after the drawing, according to Florida lottery laws. The winner(s) can claim the prize 180 days after the drawing if they take the winnings in installments. I can't believe it. It's shocking, Sara Jeltis told ABC News Radio. Out of the whole country, this Publix in little Zephyrhills would be the winner. <a href="http://abcnews.go.com/US/powerball-winner-mystery-zephyrhills-fla-residents/story?id=19214224#.UZpuNrW1HDw" >source</a>