Voting is done by considering party affiliation, not principles. At least for themajority. Those who put principle above party are far too few in number to make any significant difference in an election.
I agree with you, in fact I am in that majority on almost all Federal elections. But that is because I am convinced that the Dems are truly enemies of freedom and the Republic.
The sad part is that corruption and lying are, at least to a certain extent,accepted characteristics of pols. Even when honesty and character are visibly displayed large numbers of people will readily believe that the pol is a liar.