Tunisia's Prime Minister replaced most state gover**rs on Friday, bowing to a demand from secular parties to purge Islamists From key jobs before elections this year. After a political crisis brought on by the killing of two opposition leaders last year, the ruling Islamist party stepped down to allow a caretaker government to take over until elections later this year under a new constitution. The secular opposition accused the Ennahda Islamist party of placing party officials in senior state jobs just before it quit power, and had asked that the appointments be reviewed. "Prime Minister Mehdi Jomaa decided to change 18 out of 24 gover**rs to overhaul the administration," Interior Minister Lotfi Ben Jeddou said on the outcome of that review.