A recent poll conducted by UMass Amherst asked 1,064 voters whether they think that Donald Trump was guilty of trying to overturn the results of the 2020 presidential election. Out of these voters, 617 said Trump should be kept off their state's ballot. What percentage of the voters surveyed believe that Trump should be kept off the ballot?
1) 30%
2) 40%
3) 50%
4) 60%