

Conservativism, in all forms, is not a real ideology. It’s narcissism. A conservative will redefine conservative values based on their own identity.
So the “socially liberal, fiscally conservative” idiot is lying to themselves about who they are. They want fiscal policies that benefit themselves, and they don’t want to be labelled a bigot, but they are fine with bigots in office as long as they get the fiscal policies that benefit themselves.
Ask them what they mean by “fiscal conservative,” and they will probably vaguely gesture and say “lower taxes.” What they mean is “lower taxes for me.” Fiscal conservatives still want to spend government money on programs they like. They want boondoggles in their backyard, earmarks and pork barrel projects, and social safety nets as long as they are the recipient (Medicare, Social Security, Veteran benefits, etc.)
They want to frame it as responsible restraint. Pull funding from programs they don’t understand, like scientific research, or don’t like, like foreign aid (except of course if strong ties to their home country).
And when they say lower taxes, when pressed, they will describe how their property tax or income tax or capital gains tax or death tax is really bad “for the economy.” They want good schools and roads and infrastructure, but they want someone else to pay for it.
Calling themselves conservative gives them license to be as selfish as they want to be without having to admit that they don’t actually have any values.
She’s almost an adult. Almost.
I understand your discomfort, but also she’s going to be making decisions for herself for the rest of her life. Offer supportive guidance. Ask clarifying questions without judgement.
Is she simply dating multiple people, or is she in multiple committed relationships? Do the guys know that she is seeing both, and do either of them expect her to pick one (or neither) eventually? Are they sexually active? As a parent, that last question can be extremely uncomfortable, but it’s a big clue to the nature of the situation.
I would advise that these relationships are dicey. It’s an unbalanced equation. What are they sharing? Her time? Her affection? Her body? Who decides how she is divided up? Does she have the power in the relationship or is she a thing they are passing around? Why are they OK with having half a relationship? Jealousy is a sneaky demon, and the things people say often don’t match the things people feel.
Polyamory can work in adult relationships if everyone is honest about what they want. Teens in relationships can sometimes struggle to advocate for themselves and might tolerate a lot more abuse before they speak up. If she feels like you are judging her for her choices, she may go even further to hide or suppress her feelings from you.
Make sure she understands that you are in her corner, and no topic is off limits. It might be equally uncomfortable for her to discuss it with you, but this is a situation worth monitoring closely. Her relationships should make her feel good about herself, and learning to be in a relationship is learning to balance your needs with the needs of another person. Is she being selfish or callous towards their feelings? Is she creating drama or seeking attention? Does the tension stoke her ego? Those would all be perfectly normal childish traits, and unhealthy attitudes to carry into adulthood.
This can be an important life lesson for her, but check in to make sure she’s learning something that will help her in the long run.