TALLAHASSEE — Gov. Rick Scott signed a bill into law Friday aimed at accelerating the pace of the death penalty process in Florida, which could make the governor the most active executioner in modern state history.

The measure, dubbed "The Timely Justice Act" by its proponents, requires governors to sign death warrants 30 days after the Florida Supreme Court certifies that an inmate has exhausted all legal appeals. Once a death warrant is signed, the new law requires the state to execute the defendant within six months.

The bill, which passed the House 84-34 and was approved by the Senate 28-10, allows the governor to control the execution schedule slightly because it requires him to sign a death warrant after the required clemency review is completed and only the governor may order the clemency investigation. Scott's office told lawmakers that because at least 13 of the 404 inmates on death row have exhausted their appeals, his office has already started the clock on the clemency review.

If Scott were to sign death warrants for the 13 eligible inmates, and their executions were to continue as planned, he will be on schedule to put to death 21 people since he took office in January 2011. The only other recent governor who executed that many people was former Gov. Jeb Bush, who ordered the execution of 21 convicted killers over an eight-year period.

The only governor to commute a death sentence since the state passed its current capital punishment law in 1973 was former Gov. Bob Graham, who reduced the sentences of seven men between 1979 and 1983 for various reasons, according to the Death Penalty Information Center.

The clemency provision was added at the request of Scott's general counsel, Pete Antonacci. The clemency investigation allows for the state Parole Commission to conduct an off-the-record review of the entire case and recommend whether the death warrant be signed or the sentence commuted.

Opponents warn that the accelerated clock will diminish the opportunity to exonerate anyone on death row who has been wrongly convicted, reduce the opportunity to challenge convictions because of ineffective counsel and produce a "bloodbath" of executions in the next month.

"Gov. Scott came to Tallahassee to restructure our economy and drag us out of the recession, but if this happens history will note him as the governor who signed more warrants than anyone else,'' said Howard Simon, executive director of the American Civil Liberties Union of Florida.

But Antonacci, who has overseen the governor's death penalty review, disagrees. The clemency provision was added at his request and clemency investigations typically take from four months to a year. But, he acknowledged, the 13 inmates now undergoing the review "will be done within the next year.''

The Timely Justice Act comes at a time when five other states are either repealing or putting a moratorium on executions, and the Florida Supreme Court is conducting a comprehensive review aimed at making more efficient the state's post-conviction process.

Florida leads the nation in exonerating death row inmates, having released 24 prisoners from death row in the last decade. Death penalty opponents flooded the governor's office with letters and petitions urging him to veto the bill, complaining that Florida is one of only two states that do not require a unanimous jury to sentence someone to death.

But the bill's supporters say that the ability to exonerate the innocent will not be hampered by the faster appeals process.

"We're not short on anti-death penalty zealots in Florida, but most people in Florida think it's unreasonable to put people on death row 20 to 25 years when their sentence was not in question,'' said Rep. Matt Gaetz, R-Fort Walton Beach, the House sponsor of the bill.

Supporters said 154 inmates have been on Florida's death row 20 years and 10 have been there for more than 35 years. The average time for appeals runs 13 years, below the national average of 14.8 years.

The law imposes strict time limits for when records must be submitted from courts, prosecutors and defense attorneys in an attempt to streamline the appeals process.

After an inmate is executed, the law also allows the state to destroy records relating to the convict's case, unless a lawyer objects, a change in policy that Simon of the ACLU finds shocking. "We may execute an innocent person and then destroy the files so the people of Florida will never know that we committed that travesty,'' he said. "It's essentially cover it up."