Is blight the same for potatoes and tomatoes?

Is it the same blight for both spuds and tomatoes I wonder?

My potatoes were blighted this year but my tomatoes which are only in the next bed are still lush and green with lots of flowers coming to fruit; fingers crossed - no sign of blight.

It even made me think of growing lots more tomatoes and growing much fewer spuds next year as toms are much more expensive.

Now I have posted this, I guess they will go down!

and aubergines are also in the same family 

Don't forget that for blight to infect a plant a spore needs to a) land on the plant and b) germinate.

The first is very likely to happen if it hasn't already, the second is down to the degree of wetness and temperature (and also whether you have used a fungicidal spray to try to protect the plants.)

I had two tomato plants next to each other in pots in the garden. One was destroyed by blight, the other it still there and uninfected. Just one of those things you have to get used to.