There is a feeling among many scientific skeptics that the anti-GMO and the antivaccine broadly intersect. Unfortunately for simple generalizations, that assumption is not supported by rational political analysis. In fact, it’s much more complicated than that.
Those of us who are on the political left want to believe that it’s only the right wing (Republicans in the USA, but other countries have their political parties of the same general sentiment) that are science deniers.
One of the memes that I use is that those liberals who deny vaccines or think that genetically modified organisms (GMOs) are dangerous, really aren’t all that much different than climate change deniers, who deny basic science, cherry pick only the data that supports an a priori conclusion, or ignore the consequences of their beliefs. But it appears that the vaccine and GMO deniers are cut from different political cloths.