Part of the Letter to the U.S. government from the Electoral College

The Electors require to know from the intelligence community whether there are ongoing investigations into ties between Donald Trump, his campaign or associates, and Russian government interference in the election, the scope of those investigations, how far those investigations may have reached, and who was involved in those investigations. We further require a briefing on all investigative findings, as these matters directly impact the core factors in our deliberations of whether Mr. Trump is fit to serve as President of the United States.
end partial quote from:

Electoral College Members Request Intelligence Briefing On Russia, Trump

So, the electors want to know what connection Donald Trump actually has directly through himself or indirectly through actors in his campaign to Putin and to the Russian Government?

For example, Manifort:

1. Paul Manafort - Wikipedia

   en.wikipedia.org/wiki/Paul_Manafort

   Paul John Manafort, Jr. (born April 1, 1949) is an American lobbyist and political consultant. Manafort is best known for his lobbying efforts on behalf of ... 

   
   

   One of Trump's Campaign managers had direct connections to Putin and the Russian Government.

   
   

   Also, his nominee for Secretary of State also has a direct friendship and has even received the highest medal for a foreign person in Russia already. He was against any sanctions against Russia by the U.S. or Europe by the way too.