Even more importantly, he has given them a power base.

The power base in this case is physical violence, even death.

What do you think this is, some sort of secret power base?

"But no one wants to give up their power base."

It allowed us to keep our power base in Europe.

And he has a real power base for his opinions.

We are both just beginning to build our power bases.

He lacks a power base in the Congress and has no political party of his own.

But more was needed, he had to have some kind of power base.

And were they ever so numerous, the thing that gave them their power base is now gone.