Clinton, Obama supporters wrangle over delegates

But that exuberance is gone now.

Across the state this weekend, tense confrontations -- even shoving matches -- erupted as partisans for Clinton and Obama battled over how to interpret the March 4 election results and how to choose delegates to the Texas Democratic convention.

At one particularly raucous session Saturday at Texas Southern University, a leading Clinton backer, U.S. Rep. Sheila Jackson-Lee, was booed by hundreds of Obama supporters, and police were called later to break up heated exchanges that left some in tears.

"It's bedlam," said Houston lawyer Daniel J. Shea, a Clinton backer.

Democrat-on-Democrat clashes over delegates have been playing out in Iowa, Colorado, Florida and other states -- the latest indication that the feel-good nomination race of the era has veered into a political ditch.

The contentious battle in Texas shows the high cost of this unending campaign. To hold his delegate lead, Obama has kept a team of 65 paid organizers and lawyers in the state this month, while Clinton has 45.

As the feud rages -- even in states that voted weeks or months ago -- each side has its own game plan for victory. For Obama, it means highlighting his lead in delegates to the party's national convention in Denver. For Clinton, it means lengthening the campaign so that she can use every tactic to narrow her delegate deficit and to win upcoming primaries in her bid to raise doubts about Obama's electability in the fall.

The candidates have also become far more combative, and that hostility has party leaders worried. In a year that looked to be a Democratic romp, Obama and Clinton are burning money, erasing goodwill and eviscerating each other's reputation while the presumptive Republican nominee, John McCain, prepares to kick off his general-election campaign with a nationwide tour designed to highlight of military and congressional experience. On Saturday, Clinton told the Washington Post that she was prepared to take her campaign all the way to the party convention in August.

"This thing has turned from being an adventure to being a grind," said Robert M. Shrum, a Democratic strategist who managed John F. Kerry's 2004 presidential campaign.