Noted from the link as well:

............

Although Romney and Perot diverge on multiple issues, including over abortion and trade, Perot backed Romney during his 2008 presidential bid as well.

• ...........

Meantime, one of Mitt Romney's father's political aides, Walter De Vries, wrote a scathing letter to journalists, saying that Mitt Romney is not as principled as his father, George Romney. De Vries who worked for George Romney in the 1960s, while he was governor of Michigan and before his 1968 presidential run said that Mitt Romney's changing political positions are "erratic and startling."

"While it seems that Mitt would say and do anything to close a deal - or an election," he wrote, according to The New York Times, "George Romney's strength as a politician and public officeholder was his ability and determination to develop and hold consistent policy positions over his life."

He said Mitt Romney's campaign is "a far cry from the kind of campaign and conduct, as a public servant, I saw during the seven years I worked in George Romney's campaigns and served him as governor."

De Vries wrote the scathing critique of Romney in a 700-word essay, which he told The Times that it is the outline of a book.

"George would never have been seen with the likes of Sheldon Adelson or Donald Trump," De Vries added, referring to the wealthy casino mogul and the entrepreneur and reality TV show host.

De Vries said he voted for President Obama in 2008 and will again.