Barack Obama33 wins
Total Votes
12,692,910
States
33
Wins
33
Avg Winner %
80.7%
Contested
11/33
Closest
57.1% Oklahoma
Jan 10
Feb 7 (caucus)
Feb 28
Mar 6 (caucus)
Mar 6 (caucus)
Mar 6 (caucus)
Mar 6 (caucus)
Mar 6 (caucus)
Mar 6 (caucus)
Mar 6 (caucus)
Mar 6 (caucus)
Mar 6 (caucus)
Mar 13
Mar 13
Mar 20
Mar 24
Apr 3
Apr 3
Apr 3
Apr 24
Apr 24
May 8
May 8
May 8
May 15
May 15
May 22
May 22
May 29
Jun 5
Jun 5
Jun 5
Jun 5