Former Conservative party chairman Lord Tebbit says the "dodgy" views on gay marriage, the environment and Europe shared by Tim Yeo and the prime minister may have harmed the MP's bid to be re-selected.
Speaking to ITV News Anglia's political correspondent Emma Hutchinson, the Tory peer said Mr Yeo had also failed to spend enough time in his constituency.
Rather than helping him, Lord Tebbit said messages of support from David Cameron and George Osborne may have contributed to his de-selection.
He said: "I'm not sure that the support of the prime minister was particularly helping. After all, those people in the association would have regarded the prime minister's views on gay marriage, Europe and the environment as pretty dodgy as well."
The ousted Suffolk MP Tim Yeo says the Tories are doomed to lose the 2015 election if David Cameron gives in to Eurosceptic "obsessives".
Former minister Tim Yeo has lost his battle to be re-selected as the Tory candidate in South Suffolk.