The Florida Legislature formally apologized Wednesday for the state’s “shameful” history of slavery, joining five other states that have expressed public regret for what Senator Barack Obama, the Democratic presidential candidate, recently called America’s “original sin.”

The two-page resolution passed overwhelmingly in the Senate and then the House, bringing at least one lawmaker to tears. Gov. Charlie Crist, a Republican, called it a “significant step” toward reconciliation.

“All that is necessary for evil to prevail is for good people to do nothing,” Mr. Crist said in an interview, quoting the philosopher Edmund Burke. “I think we are reminded of that today because it takes courage to do the right thing, and it’s not always easy.”