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
Controversial columnist Katie Hopkins will not face charges over a Twitter outburst that described Scottish people as "little sweaty jocks".
Tens of thousands of fans of Arsenal and Aston Villa have descended on Wembley Stadium today for the FA Cup Final.
We round up the best reaction on social media to the news that Rio Ferdinand is hanging up his boots