This series is still quite recent, and well, I do not quite have anything to say about this series, so let us proceed.
We all know this is an outstanding theme song. For one it was composed by W.G. Snuffy Walden, whom we already came across with in the themes of Roseanne, Hawthorne, and My So-Called Life. Also, it was nominated and won the 2000 Primetime Emmy Award for Outstanding Main Title Theme Music, besting the likes of the themes of Falcone and The Pretender. The theme is very patriotic-sounding, orchestral, and formal. To say the least, it fitted the show very, very well.
If you want a copy of the theme, you can get it from Snuffy Walden’s release, music by… W. G. Snuffy Walden, which was released by Windham Hill Records in 2001. In the album the song lasts only 49 seconds, much like the opening credits of the show. However, there is a track called “West Wing Suite” which lasts 3:41, which sounds awfully like the main theme (sorry I only heard previews), so this might be the one for those looking for a full/extended version.
I also saw a 4:40 version of the song on YouTube, but there’s not much information behind it as to who recorded it or where it can be found. See below.
Meanwhile, below is the original opening credits.