I wrote six weeks ago about my strange experience trying to vote in the New York primary election. Election workers told people in my building that we had been moved to a different district and so were not eligible to vote, even though none of us had been notified of the change.
Letters to a number of elected officials, asking for information, went unanswered. The New York City Board of Election website only shows State districts (accessed 20120807). The website of the U.S. House of Representatives only shows the current (pre-redistricting) district borders (accessed 20120807). The Board of Election customer service phone line is constantly busy and I haven't been able to get through, and the City Public Advocate's office is the same way.
Finally I called Daniel O'Donnell, my state representative. Within five minutes his office found me a good source for maps showing the redistricting: the CUNY Mapping Service at the Center for Urban Research (accessed 20120807). These maps are not official; there is official information at "LATFOR", a State legislative task force on redistricting, but those maps are not clear enough to show building-by-building boundaries.