I am glad you're nearly getting there - all the MOAS/opinion polls - ultimate aim is to measure the feeling on the ground. The influencer has to effictively influence before we assign votes or grounds. You don't automatically get votes unless it was Raila who has Luos on his call and perk.
I think GEMa there is a lot of bribery/intimidation at the top - while the bottom - judging even from social media or facebook - is nearly anti-Raila/BBI/Uhuru/handshake.
Ruto doesn't own bribery - Uhuru is equally a bribing machine - and so are likes of Matiangi-Kibicho - which huge slash fund. Gideon Moi too. Raila and Kibaki dont bribe - they are not graduate from moi school of african politics.
And then you have guys who want to be near the power (gov) so they can get tenders, employ relatives, supporters.
Then of course you know there a lot being threaten with prosecution for being seen with Ruto.
Without any opinon poll - you can watch social media forums.
This is a better argument than Noway tail-chasing. If you have fair game - MPs gravitate to the popular party. There is lots of intimidation by Uhuru and bribery by Mobutu. In strongholds RV, Luo it much clearer. By elections of course are best indicator short of general elections.
Churn rate will still be universally high regardless of parties and factions.