ITV? Gross. Is there some law that the BBC can't be run on other channels?
Cspan streamed BBC in 2010, so not sure why they switched. But yeah, ITV is terrible. I'm sure it won't be difficult to find a BBC stream of questionable legality though.
BBC World News has more cable and satellite penetration in the U.S. now than it did in 2010. That channel will be showing results on election night. They probably don't want to cannibalize BBC WN network viewers by also placing the same programming on C-Span.
They also showed BBC coverage for the Scottish referendum, and I was only able to get it on my TV because of that. (BBC WN is available from my provider, but not in the package my family has.) So that makes sense, but it seems strange that they would've changed between last September and now.
EDIT: Not to mention I had no trouble getting the coverage on BBC's website.