Regardless of how it makes me feel
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, there is a real politick to the stance. It is the way Democrats rule and set rules. They maximize their chances for power.
The point is that the Dems gained more votes that Repubs through mail-in voting. You either play by rules that advantage yourself or you play by rules that advantage your opponent. In Georgia, the Repubs are playing by rules that advantage Dems.
Of course you never know what the response will be, but we do know that the Dems gained more voters than Repubs through mail-in ballots. It also opens the door for more fraud. It is also probable that the Repubs won't be able to game the mail-in system much better than they are already doing. The scheme works better with poorer, urban voters not middle class rural voters. At least that is an opinion I read. It is in Repubs best interests to end the practice wherever and how ever they can.
I think Repubs have shown millions of times that regardless of whatever level of desire they have to hold power they are also very concerned about what the left thinks about them. They do things or don't do things that look too extreme or cynical or powerful. So much so that they consistently criticize anyone they consider "too conservative".
There are exceptions to every rule of course but there is too much evidence for me to believe that the Rs do everything in their power to maintain power and push policy. I do see the Ds doing that. The Supreme Court nominations during the Trump administration were one such exception and that was a bit surprising.