STROUDSBURG -- Election officials say right now it's anybody's guess who might be on the ballot when we head to the polls for the Pennsylvania primary, and it's all because a lot can happen between now and the end of next month.
The uncertainty already has election folks in Monroe County preparing for last-minute changes.
Right now, the County Board of Election officials would like to print ballots and program voting machines, but they can't because of court appeals.
Tuesday night's big GOP winner in Ohio -- Governor John Kasich -- might not even appear on Pennsylvania's ballot next month.
Voter registrations are pouring in the Monroe County Board of Elections just weeks before the March 28 deadline, and the phone calls don't stop.
Election officials estimate 600 to 700 people have already changed their party leading up to Pennsylvania's April 26 primary.
Suzanne Caci is switching from independent to Republican.
"I like this year. This year is an exciting year. I think because of the fact that there finally is the outsider," said Caci.
But just who will be on the ballot remains in question.
"There are people on our ballot that might have stopped their campaign to run for president but if they haven't done that with the Department of State, then they're still on our ballot," explained Sara May-Silfee, Monroe County Board of Elections.
Military ballots were already sent out. Marco Rubio, Jeb Bush, Ben Carson all still listed, and they've suspended their campaigns.
Governor John Kasich, who campaigned at Villanova on Wednesday, might not even be on Pennsylvania's ballot in a few weeks.
"He did not have the proper amount of signatures," said May-Silfee. "He did, but some of those people that signed were Democrats."
His appeal was filed 13 minutes after the deadline. Now it's up to a judge.
Voting machines sit in Stroudsburg, needing to be programmed for the primary.
"Right now there's 166, again depending on the ballot size, anywhere from 10 to 20 minutes to program the machine, 25 minutes maybe," said voting machine technician Jason Demsey.
"It's very hard, it's very difficult, it puts big time constraints on the elections office across the state," said May-Silfee.
Experts believe the GOP race could come down to a contested convention in July.
For more information on how to register or change parties, click here.