sentences:  He narrowly defeated Labor Immigration Minister Al Grassby in the 1974 election, winning by 864 votes, thanks to the help of anti-immigration groups, led by the Immigration Control Association, which targeted Al Grassby because of his stance on immigration during his time as Minister for Immigration.He was comfortably reelected in the massive Coalition landslide of 1975.Ahead of the 1977 federal election, a redistribution dramatically altered Riverina.