June 25 (Bloomberg) -- Democrat Barack Obama has opened a 15-point lead in the presidential race, and most of the political trends -- voter enthusiasm, views of President George W. Bush, the Republicans, the economy and the direction of the country -- point to even greater trouble for rival John McCain.

Illinois Senator Obama, winning support from once skeptical women and Democrats, beats McCain 48 percent to 33 percent in a four-way race, a Bloomberg/Los Angeles Times poll shows. Independent candidates Bob Barr and Ralph Nader get 7 percent combined, with the remainder undecided.

Obama's margin and most of the poll's findings in other areas give the Democrats a commanding advantage more than four months before the November election, says Susan Pinkus, the Los Angeles Times polling director.

``The Obama voters are much more energized and motivated to come out to vote than the McCain voters; McCain is still struggling to win over some of his core groups,'' she says. ``The good news for Obama is also that he seems to be doing better on the issue that is uppermost in voters' minds, and that is the economy.''

Two-Way Race

The poll shows that the third-party candidacies of Barr and Nader, who political experts say likely will be on the ballot in most states, are hurting Arizona Senator McCain slightly more than Obama. In a two-way race, Obama's lead over the presumptive Republican nominee narrows to 12 points.

(Bloomberg)