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
Three men have been sentenced to a total of 31 years for their role in a 'crash for cash' plot which led to the death of a great grandmother
She met with the families of children who must stay near the hospital.
Ian Patterson is accused of causing his patients grievous bodily harm by conducting operations that were unnecessary.