Stupid question on the MSNBC vote

[warrior1]

Why does this add up to 101 percent and not 100?

How do you view the partisan divide in the Senate Judiciary Committee vote on Judge Samuel Alito? * 25826 responses
Justified, given his refusal to discuss his views on a number of key issues.
41%
Sour grapes on the part of the Democrats, given his solid credentials.
58%
Not sure.
2%

[hvn_nbr_2]

1. Round-off error. n/t

[bbinacan]

2. That would be my guess. n/t

[warrior1]

3. thanks