Diet Republican

Any Democrat who embraces conservative, neoconservative, neoliberal, or MAGA talking points.

Examples: Joe Biden (neoliberal hawk), Joe Manchin (votes for Republicans more than Democrats), Bill Maher, Nancy Pelosi, Hillary Clinton, Bill Clinton, Eric Swalwell (for wanting to deport Russian students), and RFK, Jr. (anti-vax, embraced by MAGA)

Kyrsten Sinema used to be a Diet Republican, but now, she left the Democrats and is on her way to being a full-fat Republican.

Diet Republican

Someone who is a self-proclaimed "Libertarian" but holds socially conservative views, especially one who is resistant to being labelled "Conservative" or "Republican"

Mark: Ned calls himself a libertarian but he's against gay marriage and legalizing weed.
James: Sounds like he's just a Diet Republican.