CNN

(CNN) – Sen. Hillary Clinton's exit from the presidential race seems to have given Sen. Barack Obama, now the Democratic Party's presumptive nominee, a bump in support against Sen. John McCain? The Gallup Daily Tracking Poll released Monday suggests the answer is yes, showing Obama holds a 6-point edge of the presumptive Republican nominee - the largest margin to date.

Obama holds a six percentage point lead – 48 percent versus 42 percent - against McCain, according to Gallup tracking poll results released Monday. Gallup reports that the Illinois senator's lead has held steady at five to seven percentage points since effectively claiming his party's nomination.

Obama's recent lead over McCain represents the Illinois senator's best showing against his new rival. Obama and McCain have mostly been polling at a statistical dead heat against one another in the Gallup tracking poll's general election match-ups.

The Gallup results released Monday are based on telephone interviews of 2,389 registered voters. The poll has a sampling error of plus or minus two percentage points.