What 'small clubs' from big cities could play in the Premiership?

[Ultra]

*Nods* Yup, agreed. Cardiff's actually only about the same size as Leicester and Swansea is about 100'000 people less (talking city limits here, not Counties.)

Though with both (more so Cardiff than Swansea) you have to consider the area around, too. I mean keep in mind that Cardiff have a lot of fans outside of Cardiff and that if they were promoted to the premiership that would be even more so, as people would go to follow Cardiff as following Wales (though, obviously not the Jacks.)

So why have Swansea's crowds been a lot higher than Cardiff's this season, when the bluebirds play in a higher league?