With the most recent comments that have surfaced, I see many Republicans saying they will write in Pence on Election Day. If people write in "Pence", does that vote still go to the combined "Trump/Pence" ticket since Pence is part of that ticket?
Remember that voters don't actually get to vote for Trump/Pence or Clinton/Kaine.
Rather, due to the Electoral College, voters are voting for something like:
"Electors from the State of Ohio who are pledged to cast votes in the Electoral College for the ticket of Trump / Pence"
Since there are presumably no electors pledged to vote for Pence for president, a voter would have a tough time writing that in.
EDIT I tracked down the exact language from one ballot in Ohio, which reads:
"A vote for any candidates for President and Vice President shall be a vote for the electors of those candidates whose names have been certified to the Secretary of State."
The ballot also has write-in spaces, but it is unclear to me how write-ins work without Electoral College Electors to actually cast those votes.