Source text: Nigel Farage has resigned from his position as MP for Clacton in the House of Commons, announcing his intention to contest the upcoming by-election. Farage described his decision as a defiant gesture against the political establishment. Farage, who was elected before the 2024 general election, is currently under investigation by Parliamentary Standards Commissioner Daniel Greenberg. The scrutiny follows allegations of undeclared political donations, including a significant £5 million contribution from Thai cryptocurrency investor Christopher Harborne. Target language code: pt Translation instructions: This is the news article content. Please maintain the original meaning.