Speaking on Radio 4's The World at One, Conservative backbencher Eleanor Laing spoke of "despair" among MPs in the party.
She said: "I'm afraid that there is a very large number of Members of Parliament on the Conservative benches now who come back from their constituencies every weekend in despair about the number of people who are resigning from the Party."
Asked what she thought Conservative voters were feeling, she said: "They feel hurt and they feel left out. They're told that they're old-fashioned and they think that they don't matter and that what they stand for, and what they believe in, doesn't matter.
"Those people who for decades have put their faith in the Conservative Party."
More top news
Sex and drugs are off limits for undercover police, official guidelines published for the first time state.
Nicola Sturgeon will hold talks with European Parliament president Martin Schulz in Brussels today.
IKEA is recalling almost 36 million chests and dressers in the US and Canada after the deaths of three children.