The Maniacs apparently play this in D, which I find impossible to sing.
This is how I play it (same changes, just transposed).
   Ben

A CAMPFIRE SONG (10,000 Maniacs)
Words & music: Natalie Merchant

INTRO: G D/F# Em D C ... D G

(G)            D                   Em                     C

G             D                 C                D

C               G              C          G        D
CHORUS:
           C          G           C

                       G                  Em    D    (First ending: C  D G)



CHORUS: end with
        C    D           G
         Six deep in the grave

SOLO: Dsus4 D Cmaj9 Dsus4

            C                    Gmaj9   G/B  C             D
BRIDGE: His oldest pain

            C                    Gmaj9   G/B  C           D
        His oldest pain

           C               Gmaj9  G/B       C        G               C
        Oh no,

        D          G (go right into verse)
        Nor can he buy

CHORUS, then repeat chorus chords with "La la la..."

ENDING: Em      D       C       D      G