In Colorado, where Republican Donald Trump spoke to a gathering of conservatives on Friday, the GOP’s lead among registered voters was only 13,607, down from 36,195 in January.

Why is that a problem? In 2012, the Republicans had an edge of 40,744 by the time voter registration closed. President Obama still won Colorado by 113,099 votes.

Democrat Hillary Clinton was already further along in building and deploying an effective voter turnout operation.

The boost in registered Democrats to turn out, especially with early and absentee voting fast approaching, could make it nearly impossible for Trump to compete, no matter how many other things he does right.