Sens. Hillary Clinton and Barack Obama are now "essentially tied'' in the Gallup Poll's daily tracking of the presidential camapaign. In Gallup's rolling survey, the tracking results for Feb. 8-10 show Clinton claiming the support of 46 percent of Democrats, Obama 44 percent.

Clinton's advantage has "eroded'' over the past five day, Gallup adds, noting that the newest results are the first to reflect the results of Obama's strong wins in three primary and caucus states over the weekend. The results also reflect what has become an even race between Obama and Clinton for the delegates needed for their party's nomination.

Gallup is interviewing 1,000 adults eady day. The results of the three-day survey include 1,279 Democratic and Democratic-leaning voters and 978 Republican and Republican-leaning voters. Among Republicans surveyed, Sen. John McCain of Arizona has the support of 56 percent, former Gov. Mike Huckabee of Arizona 25 percent.

The possible margin of error is plus or minus three percentage points, making the Clinton-Obama matchup a statistical tie.