Hillary's language "Code-Switching"

Have you heard of the term “code switching?” I think Hillary Clinton invented it when she made up the southern black accent, trying appeal to black voters. During her first run for the Democrat nomination in 2008, Hilary adopted this form of pandering to speak in a black church. This was amusing and pathetic. Would black Americans vote for her, who previous planned not to vote, or to vote for someone else? Who knows? Did it have an opposite effect for black voters who felt insulted? Who knows...