Basic Trope: A conservative political party chooses an attractive spokeswoman to show that they are "regular folks."
Straight: Alice becomes the spokeswoman for a group seeking to elect Charles Conservative for President. She is pretty, popular, and charismatic, and attracts a lot of new voters (particularly male voters).
Exaggerated: Alice doesn't even speak; her only role is to stand there and look pretty.
Downplayed: Alice is a center-right political commentator who's not affiliated with any particular candidate, although she usually puts a good word in for Republicans. She's attractive and under forty, but she has sensible, unfussy Power Hair and dresses conservatively, so her looks aren't emphasized.
Alice is Charles' wife or girlfriend (who actually does agree with these issues), and she wants to be supportive and help him get elected.
Alice does this out of free will, and she is charismatic enough to get people to listen to her.
Lampshaded: "Vote for Charles! He has a hot blonde by his side!"
Invoked: See "Enforced"
Defied: See "Reconstructed" or "Averted"
Deconstructed: It ends up looking hypocritical for a party that believes in conservativesocialmores to parade a beautiful woman around as a prop, thus relying on the trope Sex Sells. Also, it distracts from the real issues, and what if the spokeswoman in question is unaware of the issues (if they chose a Brainless Beauty), and/or does not agree?
Reconstructed: When choosing a spokesperson, said spokesperson is elected because of their talents, not their looks, and Alice is not overly pretty. Furthermore, the party gets several different people to expound on how great they are, not just Alice.