 Oklahoma's 2nd congressional district covers (approximately) the eastern one-fourth of the state, bordering Kansas to the north, Missouri and Arkansas to the east, and Texas along the Red River to the south.It is represented by Markwayne Mullin, a Republican.Oklahoma's 3rd congressional district covers western Oklahoma, from the Panhandle to the Tulsa suburbs, and borders New Mexico to the west, Colorado and Kansas to the north, and the Texas panhandle to the south.