Jacqueline Lee would be a yellow/yukon variety also resistant. The Defender is a dry russet variety.

It is neither early blight nor late blight. Right now I would say that they have a bit of septoria. If I look closely at one or two of those photos, there are some signs of it. Also, there could be an issue with either over-watering or soggy soil that's not draining well. Of course, we can't do a lot about all this rain, *sigh*. For the septoria, which doesn't look horrible right now, I would use a fungicide for vegetables - one that contains Chlorothalonil (Daconil, Ortho Garden). Use according to package directions. All fungicides must be used as preventatives; none are curative. They will not kill existing disease but will keep it from starting and spreading. And, they must be applied regularly. If you are gardening organically, I would go with one of the copper-based fungicides. Follow package directions for dilutions and frequency of application. Now I'll let you in on a little secret here in the Northeast: :-) Septoria is usually transient. Once the weather dries out and the temps increase, it will stop progressing. It is the cool, wet weather that creates the environment for it to thrive. So, you don't normally get a fungicide just for septoria. However, a fungicide will help prevent early blight, which is very common and far more difficult to arrest. And, if there happens to be any late blight around, it will help to prevent that as well. So it's worth using to prevent other fungal diseases. You can remove the affected leaves, but don't feel that you have to remove every leaf that has a small spot or two. As the septoria stops, it will just leave a few spots on an otherwise perfectly good leaf. However, if you're looking at cool temps and rain for another week, you may want to be more aggressive about removing affected leaves. Some folks say that you should bag the affected foliage and throw it in the garbage to prevent the spread of disease. Do that, but don't think it will forever eliminate septoria and early blight. Those fungi are all over -- in the air, in rain droplets -- so you can be extremely fastidious and still get those fungus diseases. Just an FYI. Happy gardening!

No. nothing to do with when they get the disease. They are two different diseases.

RTG If it is Septoria, you may have caught and treated it in time. Why don't you leave the plants where they are and see if they respond to the Daconil by putting out new unblemished growth. And follow the label directions for additional spraying. If it's Septoria and you purchased these plants, I'd wonder if it came along with them. Infected seeds are sometimes thought to be a source of the disease as well as weedy areas and infected plant debris being a harbor. Soil does not seem to be a home for the disease (see below). Here is a link that might be useful: Septoria Fact Sheet