She brings unique experience, having started in business, moving to politics through her local chamber of commerce, eventually becoming a State Governor and then UN Ambassador. Her tenure as governor actively demonstrated a willingness to use the veto power of her office.
Politicians who held down a job before moving into politics, then started at the lower levels and worked their way up, are hardly rarities.
She converted to the same religion as her husband half a decade before running for office... why so cynical?
Politicians have a long history of performative piety. Particularly in countries where religion is a big deal, it often represents not any significant faith, but a desire to be seen to fit in and make connections. How many declared non-religious are there in Congress? Approximately none, which is quite remarkable given that even about 15% of the over-60s are non-religious (higher in later generations). I severely doubt it's because atheists have some sort of innate aversion to politics. I am mindful of a friend of mine who was training as a lawyer in Georgia (US). She wasn't remotely religious, but she went to church because it was the smart decision to be seen by the community as the right sort of person.
In Haley's particular case, we might note that she converted
after she married her husband: so clearly religion was no impediment to their relationship. It was, however, about the point she started getting involved in civic affairs. We might also consider that the US right wing tends to have particularly strong ideas about appropriate, traditional, American, religious belief - i.e. Christianity and to a slightly lesser extent Judaism, so there is much greater motivation to convert for political gain. Sikhism by contrast is distinctly "foreign", and consequently is significantly less trusted (although I expect it should do better than atheism and Islam).