[23] The party was less successful in the 1977 elections, in which it won 4,396 votes (0.25%), and in 1980 Kahane was sentenced to six months in prison for his involvement in a plan to commit an "act of provocation" on the Temple Mount.

There was fierce resistance, particularly in Yamit, the largest settlement, where several extremists had barricaded themselves inside a synagogue and were threatening to commit suicide.

Kahane's legislative proposals focused on revoking the Israeli citizenship for non-Jews and banning Jewish-Gentile marriages and sexual relations, based on the Code of Jewish Law compiled by Maimonides in the Mishneh Torah.

Kahane often pejoratively called other Knesset members "Hellenists" in Hebrew (a reference from Jewish religious texts describing ancient Jews who assimilated into Greek culture after Judea's occupation by Alexander the Great).

In 1987, Rabbi Kahane opened a yeshiva (HaRaayon HaYehudi) with funding from U.S. supporters, for the teaching of "the Authentic Jewish Idea".

The prime suspect, El Sayyid Nosair, an Egyptian-born American citizen, was subsequently acquitted of murder, but convicted on gun possession charges.

Following both parties noting their support of a 1992 grenade attack on the butchers' market of Jerusalem's Old City, government minister Amnon Rubinstein asked the Attorney General to launch criminal proceedings against both Kahane and Marzel on the charges of incitement to terrorism.

Yigal Amir, who assassinated Prime Minister Yitzhak Rabin in 1995 who was in contact with "EYAL" (the Jewish Fighting Organization), a group established and headed by Avishai Raviv (a paid government informant) and portrayed as linked to Kach and Kahane Chai.

[34] After being convicted for sedition for distributing pamphlets advocating violence against Arabs, Binyamin Ze'ev Kahane and his wife were killed in a Palestinian ambush in December 2000.

The New Kach Movement existed between 2001 and 2003 and maintained websites posting Kahanist political commentary and held meetings with informal members.

[15] In the 2003 elections, former Kach leader Baruch Marzel ran as number two on the Herut – The National Movement party list.

Michael Ben-Ari, elected to the Knesset in 2009 on the National Union list, where he represents Eretz Yisrael Shelanu, is a self-declared follower of Rabbi Kahane who was involved with Kach for many years.

[38] A number of Kach followers, including Ben-Zion Gopstein, Baruch Marzel, Michael Ben-Ari, and Itamar Ben-Gvir, later became founding members and spokespeople for the segregationist Lehava movement.