Joe, a <this word> Republican, believes that high taxes and strict business regulations hurt the economy, supports gun rights, and believes abortion should be illegal.
John, a <this word> Democrat, supports abortion rights and climate action, opposes tax cuts that benefit billionaires at the expense of the average American, and believes guns should be banned or at least strictly regulated.
What could I use for <this word>? The goal is to show that they entirely agree with the respective party's platform and do not object to any part.
(Obviously, these examples don't cover the entire platforms of the Republican and Democratic parties, but I think they're sufficient to show what I'm looking for.)