How many fewer Republicans are registered to vote than Democrats and those who declined to state a party?
return Republicans ;return Democrats ;return those who  declined to state a party ;return #1 that are registered to vote ;return #2 that are registered to vote ;return #3 that are registered to vote ;return number of  #4 ;return number of  #5 ;return number of  #6 ;return sum of #8 and  #9 ;return the  difference of #7 and  #10
['select', 'select', 'select', 'filter', 'filter', 'filter', 'aggregate', 'aggregate', 'aggregate', 'arithmetic', 'arithmetic']