That's not how it works.
There isn't a single body of people called "electors." Each party forms their own slate of electors made up of state party members. Usually, these members are people who have been active in their state party, who attend conventions, who organize local events, etc.
Each slate is vetted by the campaign team and approved by the national campaign. When a state's election result is determined, it's the winning party's slate that is chosen to go to the Electoral College in December.
Therefore, the electors are already partisan party voters who will not be forced to vote against their will. They would, however, be voting against the will of the people of their state.
-PJ
“Therefore, the electors are already partisan party voters who will not be forced to vote against their will. They would, however, be voting against the will of the people of their state.”
If the slate of electors are forced by legislation to vote for the national popular vote winner instead of their party’s candidate, then I would think they’re being forced to vote against their will.