Just been doing some research and I think it's definitely possible for Marina to get a number 1 album with Electra Heart (in the UK). These were last weeks album sales, look how low they are! Even if Marina only sold 25,000 she could still go number 1.
1 Adele 22,235
2 Nicki Minaj 18,981
3 Alabama Shakes 15,703
4 Jessie J 14,171
5 Emeli Sande 12,719
However if she does go number 1, I'd like her to have good sales. We wouldn't want a Bionic situation (Bionic sold 24,000 first week but was the lowest selling number 1 album in 8 years or something). As in, I wouldn't want people to discredit her with a low selling number 1 album if that makes sense. However, judging by how hyped everyone is for this, Primadonna's good progress, the fact Marina's more of an album seller and people seem to be into buying albums lately, I think this could definitely pass 40,000+ first week. Just thought I'd highlight this