CNN

Sen. Obama leads Sen. McCain in CNN's lates national general election poll of polls.

(CNN) – Sen. Barack Obama is maintaining his lead over Sen. John McCain, according to CNN’s latest national poll of polls.

In Wednesday’s poll of polls, Obama’s support with likely voters stands at 50 percent and McCain’s at 43 percent. Seven percent of those surveyed are unsure about their choice for president.

The latest poll of polls represents a slight tightening compared to the previous national poll of polls when Obama stood at 51 percent and McCain at 42 percent. Obama’s nine-point lead in the previous poll of polls was Obama’s widest advantage so far over McCain.

Wednesday’s CNN national poll of polls is comprised of the following eleven national general election surveys: American Research Group (October 18-20), Franklin & Marshall (October 13-19), IPSOS-McClatchy (October 16-20), Fox/Opinion Dynamics (October 20-21), AP/GfK (October 16-20), Pew (October 16-19), CNN/ORC (October 17-19), ABC/Washington Post (October 16-19), Reuters/C-SPAN/Zogby (October 19-21), Gallup (October 19-21) and Diageo/Hotline (October 19-21).

CNN’s poll of polls does not have a sampling error.