Don Randall first came to parliament in 1996 as the member for Swan, but lost his seat in 1998.
He was elected as the member for Canning in 2001.
Mr Randall made headlines in February when he seconded the failed leadership spill motion against Prime Minister Tony Abbott.
Recommended Reading
Abbott government MP Don Randall found dead
Colleagues have expressed shock at the news of his sudden death.
Fellow federal Liberal M-P from Western Australia, Dennis Jensen, has told the ABC Mr Randall appeared to be a reasonably healthy man.
"I think, universally....I think it's fair to say we're quite shocked," he said.
"Don was active with many things. He regularly played rounds of golf. Obviously, you know, when you're walking eighteen holes, you are not in that bad a physical condition."
West Australian Minister for Local Government Tony Simpson has told the ABC Mr Randall was a man others wanted to follow.
"He was an inspirational man to me," he said.
"As everyone knows, Don was larger than life. He loved his electorate more than any member of parliament. He fought for everyone and every cause, and taught me a lot. This afternoon, this evening, I can't believe the news that I've heard."
Related Reading
MP Randall a 'fair dinkum' feather ruffler
Mr Randall's career was not without controversy.
In 2013, he was caught up in two expenses scandals, accused of misusing his parliamentary entitlements.
He offered to repay more than five-thousand dollars of taxayers' money for a trip from Perth to Cairns which he had claimed for "electoral business."
A short time later, he bought an investment property in Cairns.
The Prime Minister defended him at the time on Fairfax Radio, saying Mr Randall had important business to discuss with then Liberal party whip Warren Entsch.
"The gentleman in question tells me he didn't do that, that he went from Perth to Cairns to have some very important discussions with the whip," said Mr Abbott.
Mr Randall also faced questions over a five-thousand dollar trip he took to Melbourne, where he watched an AFL match.
He claimed he visited the city for "sittings of parliament".
Mr Randall was one of six Liberal politicians who boycotted then Prime Minister Kevin Rudd's apology to the stolen generations.
He referred to the apology as "wallpaper" that would not improve conditions for Indigenous Australians.
Politicians from both sides of politics have offered their condolences following his death.
In a statement, Prime Minister Tony Abbott said Don was "an outstanding local member".
"He was a passionate and persuasive advocate in Canberra and a hardworking community leader in Western Australia," he said.
Opposition Leader Bill Shorten also released a statement, saying "Don was liked on both sides of Parliament and was counted as a friend by many in the Labor Party".
"He was a thoroughly good and decent bloke," he said.
"This is a moment that puts daily politics in perspective, it reminds us of how precious life is."
Mr Randall is survived by his wife and two children.
