That 2%/week is what Ehrlich lost in October 2006 against O'Malley and lost the election.
Hmmmm, this chart appears to not back that up at all. Do you have another source?
https://en.wikipedia.org/wiki/Maryland_gubernatorial_election,_2006
Source Date O'Malley (D) Ehrlich (R)
SurveyUSA November 5, 2006 50% 47%
Baltimore Sun/Potomac Inc. November 1, 2006 47% 46%
Wall Street Journal/Zogby October 31, 2006 49.3% 43.9%
Public Opinion Strategies October 31, 2006 46% 45%
Rasmussen October 30, 2006 50% 47%
Washington Post October 29, 2006 55% 45%
Rasmussen October 17, 2006 53% 45%
USA TODAY/Gallup October 6, 2006 53% 41%
Baltimore Sun/Potomac Inc. September 24, 2006 50% 44%
Survey USA September 20, 2006 51% 44%
Rasmussen September 20, 2006 49% 42%
Wall Street Journal/Zogby September 11, 2006 52.5% 39.6%
Wall Street Journal/Zogby August 28, 2006 52.0% 42.2%
Rasmussen August 18, 2006 50% 43%