Q.moonflower in a pot outdoors
I have a moonflower in a pot outdoors. How should it be cared for this winter? Left outside, brought in the house, cut back?

Since moonflowers are perennial in the tropics, you should be able to keep it indoors over the winter. You'll want to acclimate it to the lowered light over a period of several weeks https://www.gardeningknowhow.com/houseplants/hpgen/acclimate-plants-indoors-winter.htm
You'll probably want to cut it back some, and be sure to monitor soil moisture to make sure the plant doesn't stay too wet.