I haven’t seen this usage before:

Huntsman gaslights GOP, compares the party to communist China

Via Zeke Miller, Jon Huntsman poured gasoline onto the national Republican Party tonight, then struck a match.

The author means something like ‘immolates’, but that’s not how most people use it. The reference comes from the movie ‘Gaslight‘, in which a husband tries to make his wife question her judgment by (among other things) lowering the lights while insisting that she’s imagining it. In modern usage, it means ‘to make someone think they’re crazy’.

This is the usage I’m familiar with.

Attempt to Gaslight Women Will Blow Up Republicans