Joe Biden
+
Popular supporter of environmental efforts
—
Doesn't bring Obama any votes he wouldn't get anyway
Tim Kaine
+
Could deliver Virginia for Obama
— No foreign policy or national experience
Evan Bayh
+
Popular, fiscally conservative Democrat
— Cosponsored resolution authorizing Iraq War
Kathleen Sebelius
+
Proven track record of working toward goals across party lines
—
Never worked on national or international level
Hillary Clinton
+
Could unite Democratic party under "Dream Ticket"
—
Could polarize the race and alienate centrist Republican voters
Other VP Possibilities