A signed pledge should be binding, unless you’re a Democrat elector in Washington and Colorado trying to manipulate the system to block the election of Donald Trump in 2016. On July 6, in a rare unanimous decision, the Supreme Court ruled states can enforce electoral pledges ignored by rogue political activists. This is a win not just for voters, but affirms the critical need for the electoral college itself.
Note: the importance of the Electoral College to our democracy can be confusing, and the anti-electoral college National Popular Vote movement peddles a great deal of disinformation about its intent. For a precise and clear understanding of why we must defend the Electoral College, we recommend the book, “Why We Need the Electoral College” by Tara Ross. Mrs. Ross has also written “We Elect a President: The Story of Our Electoral College” to help children understand this important institution.
Source: SCOTUS demands faith from faithless electors