The service combined a majority black church, that hosted white church where Christians worshiped together and both pastors spoke.
Who is Hillary Clinton?
- DOB 26.03.47
- 67th United States Secretary of State
- From Chicago, Illinois, U.S.
- Political party Democratic
- Married to Bill Clinton, 42nd US President
On her Instagram account she said: "I've just been to two extraordinary church services this morning, they were both a real blessing for me."
She praised how "the choir was integrated."
"I sat there with my heart just brimming over, thinking about this is what we need more of in America - when we are listening to each other, talking to each other, respecting each other."
Hillary Clinton is up against rival Bernie Sanders as well as Republican hopeful Donald Trump.
She is Methodist who says she became a Democrat because of her Christian values.
The presidential election will take place on 8th November 2016.