The have been no credible claims that the Ukrainian elections were rigged. Hatred of Ukraine and the desire to justify the Russian invasion are not credible claims.
According to the United States feral government, there have been no credible claims that the 2020 Presidential election was rigged.
Back to Square One:
People who would conduct a coup to get their way would have no problem stealing an election to get their way.
You just want them to legitimize your coup by voting in your show elections.