Have you ever written a letter,
Carrie, Mom of Alex & Anna
I've found that most politicians do have a staff member respond with their position and some even directly respond to the letter or email. This is how they stay aware of what their constituents are thinking.
The politicians who don't respond in any manner I lose all respect for. They could at least send a form letter or email. If they can't be bothered with that, then I won't be bothered with voting for them.
Funny story--when I called Hilary Clinton's office, and told them I had never called a senate office before, they told me I didn't need to give my name. You would think they'd want to know who called and where there from--even if it's just for recording purposes.