Unless you give me opinion poll raw data - some of those opinion polls I dismiss when it come to governorship.
Gusii is CLANISM 101. So where did you sample? All the 8-10 const? or you went round one or two?
There are 8 clans all who seem to have a candidate.
Yes Arati has a lead but he comes from a small clan. He has merged with Onyonka who comes from Kitutu - but current governor who is also Kitutu - the most popolous is opposed to him - and is backing Obure.
Prof Ongeri come from another big clan - related to Kitutus - and is of course going to run away with his clan.
The old senile Obure - is also popular in his clan
Machogu of UDA is also popular in his clan - Mugirangos (Gucha district of the yore - with Obure)
In short I expect Gusii to be won by very tiny margins. Arati is favourite but it's too CLOSE TO CALL. I think winner will get 35 percent - it's anybody game - because those gusii will vote clans - they live clans - they drink clans.
Arati has youth and party - Gusii have really old politicians - Ongeri, Obure, Angwenyi - are 83-85yrs old - you get a sense there will be youthful revolution - but watch out again for old clannism.
Nyamira - current governor come from popolous clan and maybe win in Matiangi party - UDA walter nyambati is also strong.
Predicting Gusii - Nyamira and Kisii - is not easy. Those people will quarrel to the polling day.
Mandera (so many candidates), Turkana (3 candidates - UDA, ODM, Jubilee), Kilifi ( 3 horse race - ODM/UDA/PAA - again Giriam are majority - but other sub tribes are also key - Chonyis, Rabai - I think Aisha is real threat because she has Malindi).
So my friend before you blurt NONSENSE STUDY THESE THINGS.
It's not that they are too close,it's the way you want them to be.You are not being objective,for instance in kisii,Arati is polling over 50% with closest competitor doing less than 20%,how is that too close,same applies to Mandera,Turkana,Kilifi, and others.