This process could potentially give an unfair advantage to one candidate over another.

这个过程有可能使一个候选人相对另一个来说有优势，这是不公平的。

youdao

They had been given an unfair advantage.

他们得到了不公正的好处。

《牛津词典》

The debate can only be a fair one if neither side has an unfair advantage.

只有当任何一方都没有不公平的优势的时候争论才会使公平的。

youdao

The idea is to give every candidate an equal opportunity, and prevent well funded politicians from gaining an unfair advantage.

VOA: standard.2009.07.27

We don't need folks who during election time suddenly are worrying about trade practices, but before the election are taking advantage of unfair trading practices.

WHITEHOUSE: The White House

Well, its competitors have a complaint: that its tax-exempt status gives it an unfair advantage.

FORBES: Crossbreed

The government says it's about levelling the playing field rather than giving disabled people an unfair advantage.

BBC: Why aren't more disabled people becoming politicians?