Why don't they know which district I'm in?

Factual Questions
1

As we close on election day, I have been phoned, mailed and leafleted many times to vote for Mike Honda like a dutiful little party member (WHY can’t CA have an open primary system in which your vote really counted? I would register independent in a flash. CO had such a system).

Background - there’s a really hotly contested Congressional race here between two guys named Jim Cuneen and Mike Honda for the seat vacated by Tom Campbell to run for Senator.

Problem - that ain’t my district. I’m in the next district over, represented by a multi-term incumbent essentially superglued to the seat (Anna Eshoo), as my sample ballot attests.

How come they don’t know not to hit me up for a vote when I’m not in the contested district? Admittedly, I’m right near the edge of it, but still, you would think the people doing campaign materials would know which district you were in.

2

The district boundaries may not match the zip code boundaries. In a closely contested race, they would probably mail to everyone in a zip code, rather than miss a few voters.

3

I’d buy that for specific Honda materials. What I wonder about are the “checklist” things listing all of the Democratic candidates that apply to you. You would think their database would include a specific entry for my district, so my checklist would include the right rep. What if districts sharing a common zip code were both up for grabs? I admit that my rep doesn’t even seem to be mounting a visible campaign, being a shoe-in (or an Eshoo-in, I guess) but still …