Polly Baca and Robert Nemanich were Colorado Democratic presidential electors last year who filed a federal lawsuit to win the freedom to vote in the electoral college for someone other than Hillary Clinton. They did end up voting for Hillary Clinton, after watching the Secretary of State expel a third Democratic presidential elector, Michael Baca, who cast a vote for Bernie Sanders. Because Michael Baca was expelled, his vote was not counted, and he was replaced by an elector who did vote for Clinton.
On August 2, Polly Baca and Nemanich voluntarily dismissed their lawsuit, which had still been pending in U.S. District Court. On August 10, they filed a new case, which is similar to the old one. Here is the new complaint. The new case is Baca v Williams, 1:17cv-1937.