FWIW, the rabid Mahlerites that post on the Mahler board have voted some. I found a few more analog recordings that I added to the mix, but only 6 performances have received votes:
Kubelik 6
Giulini 5
Levine/Solti (tie) 3
Horenstein/Walter/Leinsdorf Boston 1
I don't know what this means, if anything, for the campaign to have Mahler's 1st symphony included in Series 3. The Kubelik is available in two performances - the famous 1967 studio recording on DG, and also a 1979 live recording on Audite (highly recommended on arkivmusic.com, for one) that is SPARS coded ADD....which would mean the original tapes would be analog, right? However, they were mxed digitally, so our intrepid band would have to get their hands on the premix tapes, if that's possible, and do an analog mix. One wonders, however, if the powers that have the original tapes for this Audite release might be easier to deal with than DG......
I am surprised by the depth of support for the Giulini, and the lack of support for Horenstein and Walter. The Mahler board is virulently anti-Solti but the view is that the earlier Mahler recordings with the LSO and the Concertgebouw are not bad.