The origin of the term gaslighting is extremely interesting. It’s from a play, “The Gaslight”, from the 1930s. It’s about a man attempting to convince his wife that she is crazy, so as to have her committed. It has since become a term used whenever someone tries to tell you that things really aren’t as you remember/perceive them, that really things are a little different.
Personally I find that people use the term a little too easily nowadays. An alternate view – even if highly doctored – isn’t always gaslighting. Gaslighting requires malice to be present, and above all, it requires actual skill. Here, I think we’re just dealing with the usual political spin and BS-ing.
Edit: Just to be clear, my position is that a lot of this isn’t sophisticated enough to qualify as gaslighting. It’s just dumb politicking.