Just my take on this tab with corrections from version 1 and 2.. Used the video of 
Carlile at Workplay in Birmingham, AL, 9/24/07 for reference.

Capo 7th fret

Brandi Carlile - How These Days Grow Long


Intro: Em Am D G C D Em

Verse 1:
       Em       Am              D
I left home a long, long time ago
        G              C
with a tin can for the road
       Am                  D Dsus D
with a suitcase and some songs
        Em                Am                 D
Chasing miles through the nighttime making tracks
        G                C           Am             DDsus D
with no time for looking back to the place where I belong


Chorus:
Em        C         G             C              D
How these days grow long, but I'm on my way back home
          G          C
It's been hard to be away
Em    C            G            C
How I miss you and I just wanna kiss you
     D        G                 C     D 
D
and I'm gonna love you until my dying days
Em  D    C    D    Em
How these days grow long


Verse 2
          Em               Am                D
When your sad, you know I wish I could be there
             G             C       Am                DDsus D
to make your sorrows disappear and set your troubles free
        Em            Am                D
It's not fair for me to be this far from you
      G               C      Am               D 
D
but I promise to stay true where ever I might be


Chours:
Em          C          G              C        D
Times keeps burning on wheels keep on turning sometimes
         G          C
Feel I'm wasting my days
    Em    C            G            C
And how I miss you and I just wanna kiss you
     D         G              C     D Dsus D
and I'm gonna love you til my dying days
Em  D     C    D    Em
How these days grow long
Em         C       D Dsus D
Time keeps burning on
Em   D     C   D    Em   Am 
G C D Em

How these days grow long


Verse 3:
        Em        Am              D
Now I'm lost in a sea of sunken dreams
          G                 C
While the sound of drunken screams
Am             Em
Echoes in the night
      Em           Am                 D
But I know all of this will come to past
         G              C
and I'll be with you at last
   Am           Em
forever by your side

Chorus:
(Brandi and the twins usually just sing this(no guitar))::

How these days grow long  but I'm on my way back home

It's been hard to be away

and how I miss you and I just wanna kiss you

and I'm gonna love you until my dying days


Em         C          G              C       D
Time keeps burning on wheels keep on turning sometimes
         G          C
feel I'm wasting my days
Em    C            G            C
How I miss you and I just wanna kiss you
    D         G                 C     D 
D
and I'm gonna love you until my dying days
Em  D    C    D    Em
How these days grow long
Em         C       D
Time keeps burning on
Em   D     C   D   Em      Am 
G C D Em
How these days grow long