Scientists have found that people with conservative views have brains with larger amygdalas, almond shaped areas in the centre of the brain often associated with anxiety and emotions.
On the otherhand, they have a smaller anterior cingulate, an area at the front of the brain associated with courage and looking on the bright side of life.
The “exciting” correlation was found by scientists at University College London who scanned the brains of two members of parliament and a number of students.
They found that the size of the two areas of the brain directly related to the political views of the volunteers.
However as they were all adults it was hard to say whether their brains had been born that way or had developed through experience.
Prof Geraint Rees, who led the research, said: “We were very surprised to find that there was an area of the brain that we could predict political attitude.