dKos poll: Even a party switch won't help Crist now

Do you believe that Barack Obama was born in the United States of America, or not? (Republican primary voters only)

Yes 33 (35)
No 30 (29)
Not sure 37 (36)

Obama born in US:
Rubio: 23 (16)
Crist: 66 (73)

Obama not born un US:
Rubio: 74 (54)
Crist: 8 (31)

Not Sure where Obama was born:
Rubio: 76 (45)
Crist: 16 (33)