Charisma-based Druid?

[Blymurkla]

Is there any way to get a Druid using Charisma as their spell-casting stat instead of Wisdom?

[VRMH]

No.

[Gulthor]

You'd have to have something homebrewed, but you might be interested in my thread asking about a Charisma-based cleric a little while ago:

Charisma-based Cleric

Alternatively, consider a nature or life oracle.

[Xavier319]

Yes. The Fey-speaker druid archetype uses charisma.

[andreww]

The Feyspeaker works really quite well. Mine has a focus on making wild empathy work.