District 16 , Texas -LRB- Petra and Bob Hamman , Peggy and John Sutherlin , and Hemant and Justin Lall of Dallas -RRB- against District 17 , Southwest United States -LRB- Carolyn Lynch of Scottsdale , Ariz. ; Dennis Dawson of Santa Fe , N.M. ; and Fred Gitelman , Marc Jacobus , Mike Passell and Eddie Wold of Las Vegas -RRB- .