During this election cycle, I would have to agree that they are near center.

The NEWS portion is fairly neutral.

The commentary has shown about half or more against Trump, which suggests either middle or left. A couple of commentators such as Hannity are pro-Trump. Eric Bolling is more Anti-Hillary than pro-Trump. Generally, the commentary staff leans conservative. Add up all the differences, it makes FOX middle to middle right.

But, their NEWs comes mostly from the AP so it's not right or left.