Richard Parker writes for McClatchy-Tribune Information Services.

...Democrats are champing at the bit to turn Texas blue. “People are now looking at Texas and saying: ‘That’s where we need to make our next investment. That’s where the next opportunity lies,’ ” one Democratic state senator told Politico. There’s even optimistic chatter of Hillary Rodham Clinton’s capturing the state in 2016 if she runs for president....

Texas was reliably Democratic for more than a century, from Reconstruction through the Lyndon B. Johnson years. Johnson ably — albeit cynically and sometimes illegally — harnessed the Hispanic vote to keep his more reactionary opponents off balance in primaries.

But the liberal 1960s drove white conservatives into what was once a minuscule Republican Party. With the help of Rust Belt migrants in the 1970s, Republican strength grew under John G. Tower, Bill Clements and the elder George Bush....