At deluks917's recommendation, I bet about $265,000, mostly on FTX, and won about $142,000.
I was unable to "buy the dip" on PredictIt because PredictIt was not usable at all for me during that time, and I was unable to buy the dip on FTX because it takes about 2 days for me to move money into FTX.
I bet 4.5k on PredictIt with a spread of; likely Biden states (WI, MI, MN), Biden prez and popular vote. To pick my bets I used the Kelly betting algorithm with 538 stats and PredictIt's fees included. I only bet on the races with an kelly fraction (F) of .5 or more. The average F of the bets was .7. The spread would break even if Biden narrowly lost (Trump wins AZ, PA, GA, NC, FL), and only return negative with a major poll error of 8 points in the Great Lakes. Therefore I was watching FL for a large polling error.
After FL results came in I attempted to sell my Biden prez tix. PredictIt crashed, but I was among the first to refresh the page and sold my Biden tix at pre-election value of .66. Biden tix fell to .20 at 10:00 pm and I bought 1000 at .12 because I knew the redshift in Michigan was skewing the results. In total I gained about 20% on my portfolio over the night.
I bet 50€ for myself and 25€ for a friend, which I roughly doubled. I did this by setting a betting budget I was willing to loose and Kelly betting on it. I used betfair.es
I bet around 22K and will win around 11K. I had some bets that look like they will not work out (Dems win Senate). I would have put in more but by the time I decided to trust catnip.exchange I did not have time to get the crypto. A number of my friends won way more 11K. It was somewhat harder to make money if you were American but ways existed. At least I got out with 11K.
Last nights prediction markets on the election were heavily traded relative to past PMs. Predictit alone had hundreds of millions of USD in trade volume. Many LWers competed on the markets, for reasons discussed here. If you competed, share your experience here.