Poll: Hillary Clinton could win Texas

Clinton's approval rating is at 50 percent with 43 percent disapproving, strong marks for any politician in the state — especially a Democrat. In hypothetical matchups, she leads Sen. Marco RubioMarco RubioObama nominates ambassador to Cuba Rubio praises Marlins pitcher José Fernández on Senate floor Glenn Beck: I was wrong about Ted Cruz MORE (R-Fla.) 46 percent to 45 percent, and New Jersey Gov. Chris Christie (R) 45 to 43.

The poll is the latest evidence that Clinton would start off the 2016 presidential race with an immense amount of goodwill, should she decide to run, as well as a sign that Texas's shifting demographics could transform it into a swing state.

Clinton's edge increases considerably when she is paired against Texas Gov. Rick Perry (R): She'd lead the former presidential candidate by 50 to 42 percent. Seven in 10 voters don't want Perry to run for president again.

Rubio leads a pack of potential GOP presidential primary candidates with 21 percent support, followed by 14 percent for former Arkansas Gov. Mike Huckabee (R), 13 percent for Sen. Rand PaulRand PaulLawmaker seeks to investigate Obama's foreign tax compliance law Funding bill rejected as shutdown nears GOP senators hit FBI on early probe of NY bombing suspect MORE (R-Ky.), 11 percent for former Florida Gov. Jeb Bush (R) and Rep. Paul RyanPaul RyanWhy Obama needs PhRMA GOP lawmakers give Trump bad reviews on debate performance Team Trump: Debate won’t move needle in race for White House MORE (R-Wis.), 9 percent for Christie, 4 percent for Perry and Louisiana Gov. Bobby Jindal (R), and 2 percent for New Mexico Gov. Susana Martinez (R).

The automated poll of 500 Texas voters and an oversample of 400 usual Republican primary voters was conducted from Jan. 24-27 and has a margin of error of plus or minus 4.4 percentage points, with a 4.9 percentage point margin of error for the GOP primary numbers.