The Mo swings back to B.O.:

Sen. Barack Obama captured the Wyoming Democratic caucuses Saturday, seizing a bit of momentum in the close, hard-fought race with rival Sen. Hillary Rodham Clinton for the party’s presidential nomination.

Obama generally has outperformed Clinton in caucuses, which reward organization and voter passion more than do primaries. The Illinois senator has now won 13 caucuses to Clinton’s three.

Obama has also shown strength in the Mountain West, winning Idaho, Utah, Colorado and now Wyoming. The two split Nevada, with Clinton winning the popular vote and Obama more delegates.