Texas voters endured long lines and crowded caucuses to take part in a historic presidential nomination battle that on Wednesday remained far from settled.

Senator Hillary Clinton carried the Texas primary in a squeaker, winning 51 percent of ballots cast to Senator Barack Obama's 47 percent.

"We had an amazing overnight response on my website. People flooding in with not only contributions but with offers of help, because, you know, this race is incredibly close," said Clinton, in an interview with Good Morning America.

The final delegate shakeout is especially close in Texas, because results of the Texas caucuses --- which reward 67 of the state's 193 Democratic delegates -- are still not clear.

Obama addressed the delegate contest in a speech to supporters in San Antonio on Tuesday night.

"We still have the same delegate lead as we did this morning, and we are on our way to winning this nomination," Obama said.

So Texas, which could have decided the Democratic presidential nominee, instead decided to keep the race going.

"I think they can both claim victory," said longtime Texas Democratic consultant, Harold Cook.

Clinton's big boost on March 4th means major momentum. But momentum doesn't do much to change the math.

"Hillary Clinton came to Texas and Ohio with her back up against the wall," Cook said. "She does have some momentum now, because she stopped the bleeding. What she still doesn't have, though, are the numbers."

Clinton picked up 65 primary delegates to Obama's 61. But the Obama campaign expects to win the Texas caucuses, which means Obama may net more delegates than Clinton when all the delegate's are finally settled.

Neither candidate has the delegates needed to be the nominee, so the historic highs and lows of this protracted primary battle continues.

"It's clear that this race goes on for another five weeks at this point," Cook said.