1 Kings 12:20

When all Israel heard that Jeroboam had returned, they summoned him to the assembly and made him king over all Israel. Only the tribe of Judah followed the house of David.

And it came to pass, when all Israel heard that Jeroboam was come again, that they sent and called him unto the congregation, and made him king over all Israel: there was none that followed the house of David, but the tribe of Judah only.