European Union (EU) lawmakers have voted overwhelmingly in favour of launching action against the Hungarian government for persistently flouting democratic rules.
MEPs will vote Wednesday on whether to call on member states to trigger Article 7 measures, created to prevent a serious breach of European values.
There is disquiet in the main centre right parliamentary group, the European People's Party (EPP), about his position, despite it including his Fidesz party.
This procedure was launched by the European Commission against Poland in December past year.
But Judith Sargentini, who is spearheading the vote on whether to take action against Hungary, told fellow MEPs that the time had come for them to make an "important choice" after eight years under Orban.
"The truth is that the verdict has already been written", Orban said.
The group may now consider whether to suspend Orban's Fidesz party.
Since sweeping to power in 2010, Orban has pressured Hungary's courts, media and non-governmental groups, as well as refusing to take in asylum seekers arriving in Europe.
Italy's anti-imigration Interior Minister Matteo Salvini, whose League party has six lawmakers in the European body, said separately: "We will vote in defence of Orban".
"We don't see these people as Muslim refugees".
Grabbe's organization is part of the Open Society Foundations set up by Hungarian-American billionaire and philanthropist George Soros, an ideological opponent of Orban and blamed by the Hungarian leader, along with the NGOs Soros supports, for promoting mass immigration into Europe.
"I have nothing to compromise about since the questions they objected to were decided by the Hungarian people", Orban said Tuesday in Strasbourg, France, after the debate in the European Parliament on the report on Hungary.
"We are not going to leave the EPP", Orban said.
At the time, Hungary strongly backed Poland, vowing to erect an "insurmountable roadblock" against the motion by vetoing it in the European Council.
MEPs belonging to Italian former prime minister Silvio Berlusconi's party, Forza Italia, MEPs from the French Les Republican, Slovenian, Croatian, Slovak, Czech, Bulgarian deputies and several German MEPs from the Bavarian CSU voted against triggering Article 7 against Hungary, while only one MEP from Merkel's CDU stood by Orban.
On Tuesday Weber said the European Union might need to consider launching the sanctions procedure, under Article 7.1 of the Lisbon Treaty, if Budapest did not address the criticisms.
Former Prime Minister and Maltese MEP Alfred Sant refused to vote on a censure motion against Hungary for undermining the European Union's core values, drawing parallels with the Maltese experience of the a year ago.
A group of United Nations human rights experts on Tuesday expressed concern [press release] regarding Hungary's new immigration measures.
"It also sends out an important message to all member countries that the European Union is not prepared to compromise on human dignity, freedom, democracy, equality, the rule of law and human rights".
EPP leader Manfred Weber, nominally an Orban political ally in the assembly, conceded that "the start of a dialogue based on Article 7 could be needed".