re: Should I move my 401k money to the cash option ahead of the election?

The average Shiller CAPE ratio for that July 2013 to today has been 27.9. Where is your threshold for "extreme overvaluation"?

If the 1929 period is your yardstick that qualifies as a sustained period, nearly every one of those 77 qualifies, as the ratio was only above 30 for 2 months in 1929.

I don't know what to tell you. Overvalued means exceeding the average value in this case. But I will play along as this will be my last post in this thread because I feel like it is getting derailed.

The Shiller CAPE Ratio was spot on 30 July 1st 2017. I chose that date because the most recent time before that it was 30 or higher was March of 2002.

From July of 2017 till today, the ratio has averaged 30.14, and only dipped below 25 in one month out of 41.
The S&P 500 total return for that time frame was over 44%. Again, what could be life changing amounts of money.

Starting valuation matters, but what you are advocating is timing, and the CAPE ratio is a poor signal for timing, as it turns out most things are.