Given that this graph was completely unsourced and the tweet sounded like it was trying to be inflammatory, I went out and tried to find the actual source of this.

Apparently it was a survey carried out by "morning consult" [https://morningconsult.com/2015/05/24/men-and-women-divided-...], however the links seem to be quite broken. However, it was also discussed in this Vox article [https://www.vox.com/2015/5/27/8665401/nuclear-power-gender], which actually talks about why that might be the case.

TL;DR, according to the article there is a divide in how white men and other groups assess risk

More interesting would be to choose between fossil fuel and nuclear baseload generation, and also mention the yearly millions of deaths due to fossil fuel air pollution, versus maybe a dozen from nuclear accidents.

I think it's because women are smarter.

I mean, women tend to be greener and more social, politically. Opponents of nuclear power tend to be green and/or social. Typical case of a venn-diagram, no?

>Affordable if build outside of the US

It's still staggeringly expensive outside of the US.

Women are more emotional. They tend to vote on what "feels" best. And nuclear power can certainly feel dangerous.