I agree with you but Santorum brought this on himself.
When he first ran for Congress he campaigned against the incumbant saying the Dem (can't remember the name) didn't really live in PA but in Virginia.
The dems are just giving back to Santorum exactly what he gave to them.
What goes around comes around.
If Santorum was smart he would not have sold his larger PA home to buy a 2 bedroom and then have someone else live in it.
But then there is Tom Daschle who believed he qualified for a property tax credit reserved for only homeowners whose "primary residence" was Washington, DC. The socialist/Democratic one-party ruled city-state agreed.
South Dakota voters made the whole thing a reality. Now TD is a full-time resident of DC, no longer having to pretend to live in South Dakota.
The name you can't remember from the old PA-18 district is Doug Walgren.
I wasn't aware of that. But I have lived in DC and I know how expensive it is. I am very sensitive to the fact that it's financially very difficult for some MOC to keep up two full residences. Especially Santorum who has so many young children. I assume his wife does not work outside the home.