TALLAHASSEE -- Six months into office, Gov. Jeb Bush signed his first death warrants Wednesday, ordering the execution of an Orlando man who killed a bailiff in a courthouse shooting rampage, and a Jacksonville man who shot and beat to death a pregnant woman and her two young daughters.

Thomas Provenzano, 50, whose 1984 shooting spree in Orange County led to beefed up security measures in courthouses across the state, is scheduled to die July 7 in the electric chair at Florida State Prison in Starke.

Allen Lee ``Tiny'' Davis, 54, a one-time welder who already has survived two death warrants and last week lost an appeal before the Supreme Court for the 1982 slayings, is scheduled to follow him July 8.

Bush said he found ``no basis for altering the court-imposed sentence'' in either case.

The men -- on Death Row for more than 15 years -- could be the first to die in the state's new electric chair, installed last month to replace the aged and cracked chair built by inmates in 1923. The new wooden chair is a near replica, but was built to withstand the bulk of stocky inmates like the 5-foot 10-inch Davis, who weighs 300 pounds.

Attorneys who represent the condemned have considered challenging the new chair in court.

But Bush's top legal advisor said the electrical gear that delivers the electric shock to the condemned was not changed and has already withstood legal challenges.

``We're absolutely confident of prevailing on any sort of challenge,'' said general counsel Carol Licko.

Another potential appeal could be that both men are represented by the same office of the Capital Collateral Regional Counsel, which handles post-conviction appeals for Death Row inmates and would have to prepare both cases at the same time.