Diet - sodium in soup ? ?

ok .. so i am trying to diet .. first of all is soup a good option ? ... i got the cambels heathly choice ones or what ever .. there is a lot of sodium in pretty much all soup .... but i want something warm for the winter lol ... anyways .. if i don't really eat much of the broth is that where most of the sodium is ? .. sorry if this seems like a stupid question ... but just wondering if any one knows .. thanks! :)