BRADFORD West MP George Galloway has spent the night in hospital after he was beaten up in the street.
The pro-Palestine campaigner suffered a suspected broken jaw, broken rib and bruising in the attack last night in Golborne Road, Notting Hill, London.
A man was arrested on suspicion of causing actual bodily harm.
The Respect Party tweeted a picture showing two red lumps on his right temple.
Wearing a black jacket and white shirt, Mr Galloway looked defiant in the picture taken in the street as he made his way to St Mary's Hospital, Paddington.
"The Respect Party thanks all well-wishers," the message said.
Mr Galloway had been posing for pictures when a man shouted a comment about the Holocaust and attacked him, according to his spokesman.
Police were quickly on the scene and made an arrest.
The spokesman did not know whether the attacker was an Israeli, an EDL-supporter or had some other motivation for attacking the MP.
Mr Galloway was interviewed earlier this month by West Yorkshire Police following a speech in Leeds in which he claimed Bradford was an Israel-free zone.
The spokesman said Mr Galloway had described himself as being "in pretty bad shape."
In 2008 Mr Galloway was pelted with a rubber stress ball as he was campaigning in an open-top bus in London.
The firebrand politician received medical treatment but was not taken to hospital.
A man was arrested and cautioned over the incident.