Do people in the U.S. understand the importance of this election?
If Trump is elected, he will hand over the eastern parts of Ukraine to Russia. Just like that.
China and other dictatorships will see that the West is weak, and every dictator will want a piece of their neighbour and install puppet governments. After this "peace," Putin or his inner circle will rearm and attack again. Once Ukraine is conquered, Moldova will be next, followed by various "-stans," most likely Kazakhstan.
If Trump does not win and Ukraine continues to receive support, Ukraine can become a functioning democracy aligned with the West.
If Ukraine is lost, Russia will turn Ukrainians into soldiers to be used in any war. This is what happened in 1939 when the Winter War broke out between Finland and the Soviet Union.
Just over 10 years earlier, Stalin had starved millions of Ukrainians to death, (
https://en.wikipedia.org/wiki/Holodomor) and at Finland's war front, many more Ukrainians were slaughtered. It was called the Soviet army, but Russian officers primarily led it, and it was mainly Ukrainian soldiers who were fed into the meat grinder.
Stalin wanted to get rid of minority populations. In the current war, minority groups are again being used as cannon fodder.
In Europe, there are also people like Chamberlain and Quisling, but they can be dealt with as long as the democracies of the Western powers prevail.