[AndyTheBear]

Seems its a +9 Democrat poll, but I see where the 18.9% came from:

Strong + not strong Dem: 26% + 9% = 35%
Strong + not strong Rep: 19% + 7% = 26%

So a difference of +9% democrat.

But if we include independent/leaning to party than its +7 Dem:

Dem: 26% + 9% + 9% = 44%
Rep: 19% + 7% + 11% = 37%

I note that 44% is 18.9% more than 37%...but I would simply call this poll +9 Democrat.

[NYC-RepublicanCT]

I would call it a D+7 poll, leaners should fall into the respective D and R buckets