Answer
It is permissible to take part in the legislation Assembly of a non-Muslim country with the following conditions; a) there is no obstacle in accomplishing the laws of Islam, b) one is able to serve the Muslims, and, c) one is able to save the Muslims from oppression. (Fataawa Mahmoodiya
vol.13 pg. 425).
And Allah Taãla Knows Best.
Was salaam
Mufti Ebrahim Desai