It would make a mockery out of their service
It may not bother you but it would me
Is the Constitution a mockery?
Holding Constitutional democratic elections where any candidate (now typically only one of two parties) has a chance of winning would make a mockery of their service?
Then declare the Constitution dead and worthless if we can't hold free and fair elections without worrying that one party is the enemy and having to use our vote to prevent them from gaining power.
The idea of a representative republic is that elected officials represent the views/values of their voters...NOT that they represent a 'least evil'. This system of government is dependent on voters voting for politicians to REPRESENT them, NOT to vote for the second-most evil candidate who's likely to win. The Constitution looks like it has already failed if people are playing games with the formerly reverent act of voting.
Why don’t you ask the mothers and fathers and the wifes and husbands etc etc of the military if they want Obama or Hillary as CIC