His presence on the 120-member council, sometimes referred to as the Palestinian parliament, is unlikely to make a significant difference to Fatah's policies, which will continue to be largely dictated by Mahmoud Abbas, the president, and his inner circle. But it does have huge symbolic significance.
His polling in the 31st place for one of 80 seats contested by more than 600 Fatah members, he said in an interview, challenged Israel’s suggestion that the Palestinian people and its leaders regard the Jews as their enemies.
Or as one local Palestinian pundit noted of the vote's message: "It is not Judaism that Palestinians are fighting, it is Zionism."
It also finally puts Dr Davis in a position from which he hopes to shake up the complacency that has bedevilled the Fatah leadership and the PLO in their neglect of supporters outside the Palestinian fold.
"In my view [Fatah] is conducting a struggle with one hand tied behind its back," he said, sipping Arabic coffee in the garden of St George’s cathedral in East Jerusalem.
"The PLO represents a democratic alternative for all, including the current coloniser people, the current perpetrator of war crimes and crimes against humanity," he said in reference to Israel and its Jewish population. "In the 25 years since my joining the Fatah and PLO, this message has been marginalised. The mainstream went another direction, the Oslo accords direction."
His chief task, he said, will be to push Fatah to become a broad-based resistance movement modelling itself on the African National Congress, which brought down apartheid in South Africa.
The reference to South Africa is not unexpected. Dr Davis started describing Israel as an apartheid state in the early 1980s, long before it had become fashionable even on the far left.
His most recent book is Apartheid Israel: Possibilities for the Struggle Within, published in 2003, in which he argues that discrimination against Palestinians is embedded in Israeli law and sets out what he regards as the four classes of citizenship established by Israel's parliament.
full text at Ramallah Online