It's NOT about the time. Martha has been a politician since 1992 and she has no traction.
IT about being greatest defender of community interest - in this case Kikuyu or GEMA interest. It's about epic community defining events that make people realize you're a leader and they entrust leadership on you.
Uhuru was hopeless until 2007 PEV when he led Kikuyu fightback as Kibaki police and security agencies failed the people..
Him being charged by ICC for the same - made him a community hero.
He is a rich kid who didnt have to play dirty with Mungiki - but for the love of GEMA nation - he put his money and energy on the line - not only to revenge/counter-attacks but also to finance IDPS. That made him a community hero.
Now move on 5yrs later - Uhuru becomes the enemy of the community - by pursuing personal interest against community interest.
Communnity interest - was that Raila as an enemy who had been vanquished and peace deal with Kalenjin was for community interest.
Instead of listening - Uhuru goes on angry and violent tirade - throwing any opposition to his handshake to jail or streets - trying to bankrupt or fire anybody opposed to it.
He sooned part ways with GEMA community - and the heroes of that war against Uhuru and his elit none has been general like Gachagua.
Maybe he not fully decorated - he is just going for DPORK - but he will soon be a four star general - because once he assume office and knowing Ruto is regimental - he will tell GEMA to go through Gachagua.
Except maybe for 10 guys that he personal trust - wakina Nyoro, Ichungwa, Kuria, Wahome, Kindiki - might be excepted from seeing Gachagua.
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If you are a pastor/church.. It takes about 20 years for you to have some foothold.In business or workplace,It takes many years of schools and work to gain a strong network and foothold.The same case applies with politics,Uhuru built his reputation for a period of 20 years since he joined politics supporting Matiba in 1992.Same case with Kibaki who was in politics for 40 years before becoming president.
Ruto has gained some credibility in GEMA b3cause of supporting Uhuru since 2013.That gives him 40% GEMA support but 60% GEMA haven't forgotten the 2007/8 clashes which started in 1992.
What has Gachagua done to GEMA?Where was he during the 1992 1997 2002 2007 elections?
Gachagua,you think you are The leader of GEMA after becoming MP for 5 years? 
That is why people like Kuria Kabogo are trashing him while is being heckled left right and centre with poorly attended rallies.