If the socialists get power, the will consolidate it and the constitution won't stop them because they don't care what it says and nobody else will stop them.
It is not that they don’t care what the Constitution says, only that what is so clearly stated has to be redefined in terms that though it SOUNDS much like the original language, is subtly changed or even given almost the opposite intent.
Some Constitutional “scholars” only study the Constitution looking for loopholes. And from time to time, they find them.
When the socialists take over, they will look back at the change to popular election of Senators as their most important win.