On the ballot measure concerning the fluoridation of Portland's drinking water supply, are you ... Certain to vote yes? Certain to vote no? Or not certain?

TRACK POINTS	05/10/13	05/17/13	n/a	n/a	n/a	n/a	n/a	n/a	n/a
	± 4.1%	± 4.1%	n/a	n/a	n/a	n/a	n/a	n/a	n/a
Track All Likely & Actual VotersTrack Gender Male Track Gender Female Track Age 18-34 Track Age 35-49 Track Age 50-64 Track Age 65+ Track <50 / 50+ 18-49 Track <50 / 50+ 50+ Track Race White Track Race Black Track Race Hispanic Track Race Asian/Other Track Returned Ballot? Already Returned Track Returned Ballot? Not Yet Returned Track Returned Ballot? ON Election Day Track Returned Ballot? Will Not Vote Track Returned Ballot? Not Yet Sure Track Cell Phone / Landline Cell Phone Track Cell Phone / Landline Landline Track Party Affiliation Republican Track Party Affiliation Democrat Track Party Affiliation Independent Track Ideology Conservative Track Ideology Moderate Track Ideology Liberal Track Education High School Track Education Some College Track Education 4-year College Degree Track Income < $40K Track Income $40K - $80K Track Income > $80K Track Region N Portland Track Region NE Portland Track Region SE Portland Track Region NW Portland Track Region SW Portland	ALL	ALL	n/a	n/a	n/a	n/a	n/a	n/a	n/a
Yes	39%	40%	n/a	n/a	n/a	n/a	n/a	n/a	n/a
No	48%	53%	n/a	n/a	n/a	n/a	n/a	n/a	n/a
Not Certain	14%	8%	n/a	n/a	n/a	n/a	n/a	n/a	n/a
Total	100%	100%	n/a	n/a	n/a	n/a	n/a	n/a	n/a