It was 19 last week, so, if this stuff is at all believed, it's been cut by more than 1/3 in a few days. What it means is that now that the GOP candidate is solidified, he'll start running ads and chomp into that lead.
Post a link to the poll showing Graf down 19 points last week please. I am not aware of any that showed that.
In fact two weeks ago this poll showed Giffords up only 10, so Graf has LOST two points in the last two weeks.
http://www.realclearpolitics.com/epolls/2006/house/az/arizona8-95.html