Keep it Luhya - continue with Tranzoia, Nandi, Uasin Gishu, Nakuru and Nairobi - there you'll find significant Luhya diaspora.These are the rift valley votes that use to belong to Raila. Also Kakamega gain is more than 10% yawa. Malala-Khawale-maDVD definitely worth more than that.
Go Coast - Ruto has flipped Kwale, is doing better than Uhuru in Mombasa and Kilifi - plus Taita Taveta(UDA lost by a whisker) - elsewhere is 50-50.
Go Ukambani - Ruto is doing great in Machakos thanks Muthama - and will do better Makueni too(UDA by a whisker lost MCA seat) Generally according to opinion polls and social media - Ruto is leading in Ukambani - but lets not get carried away yet - choice of DPORK will determine if the figures changes or not.
Go Turkana & Matusa - Ruto will beat Raila in there - doing better than Uhuru.
Gusii - Ruto was going to do badly - but not anymore. Ruto may lose 10-20 percent in Gusii.
The rest are pretty much usual 50-50 amongst somalis and related tribes of 5 counties + Tana River.
Now when you add all those that - you will realize if Raila was to get 30% of GEMA (big iff) - Ruto will gain similar number of votes.
Meaning nothing doing. Ruto is PORK.
Raila is loosing western,specifically Bungoma by about 20% and Kakamega by about 10%.Thats a fact that we are alive to,the difference here is that this marginal loss in Bungoma and Kakamega translated into real votes is about 300K,vis a vis the marginal gain of 30% in gema which translates to about 1.5M.Net effect is that Raila us gaining more than Ruto.Had Ruto ran away with the entire western,then that's a different story.For example Raila starts with 80% Busia,which is about 300k votes,he gets 50% vihiga which is another 100K,He gets 60% Kakamega which is about 300K,then he gets 40% Bungoma which is about 200K.In total this is 900K.This is a drop of about 400K from 2018.This is the most realistic scenario in western Kenya.Raila will get 0.9K,Ruto will add 300K votes to what Uhuru got to make it 600K.