Sen. Lindsey Graham, R-S.C., said Wednesday that his campaign's email server was hacked by Russia.

"I do believe the Russians hacked into the [Democratic National Committee]. I do believe they hacked into [Clinton campaign chairman John] Podesta's email account. They hacked into my campaign account," Graham told CNN's "The Situation Room." "I do believe that all the information released publicly hurt Clinton and didn't hurt Trump. I don't think the outcome of the election is in doubt."

The former Republican presidential candidate did not say anything else about being hacked by Russia. Instead, Graham turned his focus on the U.S., telling Americans to unite and focus their energy on pushing back against Russia.

"They're trying to destabilize democracy all over the world. Not just here," Graham said. "Here's what we should do. We should tell the Russians that on no uncertain terms, you interfere in our elections, we don't care why, we're going to hit you and hit you hard, we're going to introduce sanctions, it'll to be bipartisan."

"If you don't go after Russia for hacking during 2016 election you're inviting other bad actors to do the same," Graham said.