Sirens wailed across southern Israel as Hamas gunmen fired barrages of dozens of rockets from Gaza.
Noam Shalit said he would not involve his son, freed soldier Gilad Shalit, or the rest of his family in his run for the Knesset.
The father of Gilad Shalit denied reports that his son went on a hunger strike toward the end of his captivity.
It seemed that all of Israel breathed a sigh of relief when Gilad Shalit returned to Israel after being transferred from Hamas captivity in Gaza into Egyptian custody.
Noam Shalit faced a bevy of protesters opposing the release of his son Gilat as he arrived at the Israeli Supreme Court in Jerusalem to urge the court to allow the prisoner exchange.