I guess he hopes the President will "save" the country.
The words "lord" and "savior" can indeed be used in different ways other than specifically meaning Jesus in the bible.
But I wonder why he described the atmosphere as being "like a church"...?
Here is what he said about Obama in an interview on the religious website, "Hollow Verse" (hollowverse.com/jamie-foxx/), which explains a bit the "saving" comment you posted:
*Foxx leaves nothing on the table in regards to his political beliefs: he’s a fervent supporter of the Democratic party....His support for the Democrats seems to stem mainly from his belief that government should be working for the common man–the lower and middle classes. He said,
"No matter how much money I make, it doesn’t matter. Every time I drive down the street or into a neighborhood that doesn’t have as much, you feel for them. . . . I think what we gotta get away from is, making the person who is the common man feel bad about himself. . . . Everyone matters".*