FILE - In this Tuesday, Oct. 16, 2018 file photo, U.S. Sen. Ted Cruz, R-Texas, takes part in a debate for the Texas U.S. Senate with U.S. Rep. Beto O'Rourke, D-Texas, in San Antonio. Cruz and Democratic challenger O’Rourke are of differing minds as to whether demographic shifts have changed Texas enough to send a Democrat to the U.S. Senate. (Tom Reel/San Antonio Express-News via AP, Pool, File)