home and car insurance, how to get the better deal?

Currently I'm with statefarm and I'm wondering if anyone has a way of asking them to give us a better deal for the both the car and home insurance, or if its best to just switch to another provider?

Ultimately, I'm curious if there is a way to decrease the rate just like how some people would do it for cellphone bills in dealing with their retention reps and bring down the overall monthly bill.

Thanks for any help or insight.