We are nowhere near advanced enough to say that life, complex or intelligent, doesn’t exist anywhere near us. There is no reason to believe an intelligent spacefaring race would make themselves so obviously detectable that us stupid primates could see them. And for non-intelligent life, we’ve been able to confirm mere thousands of planets. We have a very long way to go before we can start talking about the meaningfulness of a lack of life signatures in the atmosphere.
Not sure who’s downvoting you for asking for clarification. I think the person you responded to misinterpreted the first figure in their second link. It says among validated voters, 48% voted for Clinton and 45% for Trump.
Nowhere in those links does it say the percentage of voters by party registration that voted, and I can’t find it in any other searching either. Your 60% turnout of voting-eligible population comes up all over the place though.