What do you do when duplicate serial numbers start showing up? I'm assuming you won't know who was issued which serial number, and if it's truly randomized you wouldn't even know where they were sent.
Much better to just deny it till after the new government is in, then make a nothing-burger out of all the news that is reported "afterwards"? Meanwhile, 50% of your country is disenfranchised for X-years because it was "less chaos" to just accept the vote and move on.