Pollard, a former Naval Intelligence officer jailed for passing classified information to Israel, is serving the 21st year of a life-sentence in a maximum-security federal prison in the United States.
The letter in support of the Manhigut Yehudit (Jewish Leadership) Likud faction's Feiglin reads:
"My wife Esther and I have known Moshe Feiglin for some time, and have found him to be honest, responsible and G-d fearing. We feel that Moshe is the right leader for the Likud and for this time in the Nation's history.
"This is a critical moment in the history of the Jewish Nation. We are bereft of leaders that understand that true Jewish leadership must be subserviant to the will of the Almighty. It is only by G-d's grace that we live in The Land. Until we have leaders who recognize this simple fact and act accordingly, we as a Nation will continue to be at the mercy of both our friends and our foes.
"We believe that Moshe Feiglin may be the only leader in Israel today who understands that power is a test, not a gift, and that it must be wielded judiciously. We believe that because of his faith in the G-d of Israel, Moshe is the only leader in the Likud today capable of withstanding the wiles of our enemies and the pressures from our friends to act contrary to our own national interests.
"A vote for Moshe is a vote to restore Israel's national honor and integrity of Israel. That is why Esther and I want to express our full support for Moshe, and to encourage all those who can vote in the Likud primaries to vote for Moshe Feiglin."
The letter, faxed from prison by Pollard.
In recent weeks, two other Likud candidates have been harshly criticized for their inaction on behalf of Pollard.
Pollard activists interrupted a campaign address by Foreign Minister Silvan Shalom at a Tel Aviv hotel last week, demanding the government take serious action towards securing Pollard’s release.
Two weeks ago, as Pollard's wife Esther appeared on Ya'ir Lapid's Channel Two talk show, a recording of Pollard speaking from prison was played, in which he was heard sharply attacking Defense Minister Sha'ul Mofaz for the fact that the name Jonathan Pollard is not on the official Ministry of Defense list of captives. "Every Knesset Member that I've talked to about this has been shocked and disgusted when they realize what has been done," Pollard said, "and I blame Mofaz himself, personally, for this. Mofaz has knowingly abandoned a soldier in the field."
An agent whose name is on the list is entitled to rights and benefits as an Israeli agent, including the fact that the Israeli Government would be obligated to seek his immediate release. It would also enable Pollard to receive financial benefits, which he has in fact never received.
Pollard was arrested in 1985 and later convicted of passing classified information to a U.S. ally.