With 30% reporting, he’s up 58% to 40%.

And as usual this year, the turnout is huge:

CASPER, Wyo. (AP) — Democrats deluged caucuses in Wyoming’s caucuses Saturday as Sens. Barack Obama and Hillary Rodham vied for the next prize in their extraordinarily tight Democratic presidential race.

In Casper, hundreds were lined up at the site of the Natrona County caucus. The location was a hotel meeting room with a capacity of 500. Some 7,700 registered Democrats live in the county.

“We’ll have to put ’em in the grass after a while,” said Bob Warburton, a local party official.

The room was nearly full, with an overflow area set up near the hotel pool. Meanwhile, Obama and Clinton supporters greeted participants with campaign signs and bottled water.

In Cheyenne, a line of hundreds stretched around the block at the Cheyenne Civic Center as voters waited for the caucus to start.

More as it develops…

Here’s more…

CASPER, Wyo. (AP) – Barack Obama led rival Hillary Rodham Clinton in voting returns Saturday as Democrats crowded caucuses in Wyoming, the latest contest in the candidates’ close, hard-fought race for the party’s presidential nomination.

Obama led 59 percent, or 4,000 votes, to Clinton’s 40 percent, or 2,756 votes, with 18 of 23 counties reporting.

Obama generally has outperformed Clinton in caucuses, which reward organization and voter passion more than do primaries. The Illinois senator has won 12 caucuses to Clinton’s three.

But Clinton threw some effort into Wyoming, perhaps hoping for an upset that would yield few delegates but considerable buzz and momentum. The New York senator campaigned Friday in Cheyenne and Casper. Former President Clinton and their daughter, Chelsea, also campaigned this week in the sprawling and lightly populated state.

So I guess that’s 78% reporting? Looks like he has this locked up. No word yet what the delegate split will be.

Politics Early Wyoming Numbers Point To Big Win For Obama