Peter Isaac Diamondstone (December 19, 1934 – August 30, 2017)[3] was an American lawyer and socialist politician from the state of Vermont, best known as a perennial candidate and co-founder of the Liberty Union Party.

degree from the University of Chicago Law School in 1960 and moved to Vermont in 1968, where he soon entered the political scene.

[3] While Diamondstone usually carried the Liberty Union banner in his political campaigns, he occasionally ran under other party labels and even entered Democratic and Republican primaries.

In 2000, he was the official Democratic nominee for U.S. House of Representatives and placed a distant third, behind Bernie Sanders (running as an independent) and Republican Karen Ann Kerin.

In 2006, Diamondstone was escorted off stage and charged with disorderly conduct after cursing at students in the audience and repeatedly speaking past his allotted time during a U.S. Senate debate.

In 1984, Diamondstone passed out anti-Sanders flyers, calling him a "Quisling" and criticizing him for endorsing Democratic presidential nominee Walter Mondale.

He did not endorse Sanders' 2016 presidential candidacy and referred to him as a war criminal for supporting the 1999 NATO bombing of Yugoslavia.

He opposed water fluoridation, genetically modified food, and the HPV vaccine, which he referred to as a "Big Pharma sham".

He endorsed withdrawing all military aid to Israel and criticized "war crimes and genocide" perpetrated by the Israeli government.