Yes, and as I remember it, it was right after he lost the election and in the middle of his bitching and moaning about it, he said he was a proud, card-carrying communist.
It seems strange now to have all these stories coming out about him being anti-communist. I DID hear him saying it, not in a speach, but like in an impromptu comment to some news reporters.
It may be true that he was not one. He said a lot of things that weren't true.
Make no mistake about it, if Humphrey was alive today he would be as partisan a Democrat as George McGovern and other of his comtemporaries that are still around. He was on the left wing of his party in the 1960's (remember, privately he broke with Johnson on the war even though he was VP)so there is no reason to believe he wouldn't be on the left wing in today's Democrat Party.