PHOTO: Getty Images
Now playing
02:48
Kasich: Trump has created a 'toxic atmosphere'
PHOTO: CNN
Now playing
01:43
Kasich: We've got to take our country back
kasich ac
PHOTO: CNN
kasich ac
Now playing
01:39
Kasich: Trump deserves credit on bump stocks
Gov. John Kasich
PHOTO: CNN
Gov. John Kasich
Now playing
00:54
GOP governor: Common sense gun laws make sense
Now playing
01:21
Kasich: Chaos and disruption circling WH
PHOTO: CNN
Now playing
01:36
Kasich pleads to Trump: Take steps on guns
PHOTO: CNN
Now playing
01:11
Gov. John Kasich: Roy Moore should step aside
Now playing
07:54
Governor John Kasich interview (full)
Now playing
02:49
Kasich opposes new GOP health care bill
Kasich DACA CBS
PHOTO: CBS This Morning
Kasich DACA CBS
Now playing
00:51
Kasich blasts DACA decision, welcomes Dreamers
PHOTO: AFP/Getty Images/Saul Loeb/Alex Wong
Now playing
01:11
Kasich, Hickenlooper mull 2020 unity ticket
John Kasich talks with reporters after having lunch at PJ Bernstein's Deli Restaurant on April 16, 2016 in New York City.
PHOTO: Justin Sullivan/Getty Images
John Kasich talks with reporters after having lunch at PJ Bernstein's Deli Restaurant on April 16, 2016 in New York City.
Now playing
01:55
Kasich takes issue with Trump on Khan family
Republican presidential candidate John Kasich speaks during a town hall meeting in Rockville, Maryland on April 25, 2016.  / AFP / YURI GRIPAS        (Photo credit should read YURI GRIPAS/AFP/Getty Images)
PHOTO: YURI GRIPAS/AFP/AFP/Getty Images
Republican presidential candidate John Kasich speaks during a town hall meeting in Rockville, Maryland on April 25, 2016. / AFP / YURI GRIPAS (Photo credit should read YURI GRIPAS/AFP/Getty Images)
Now playing
01:03
Kasich 'astounded' by GOP platform change on Ukraine
John Kasich sits down with Jake Tapper
John Kasich sits down with Jake Tapper
Now playing
00:54
Kasich: Trump Jr. called to float VP offer
PHOTO: AFP/Getty Images
Now playing
00:56
John Kasich undecided on endorsing Trump
PHOTO: CNN
Now playing
01:12
John Kasich on dropping out: I was 'really conflicted'

Story highlights

John Kasich said he won't tell his supporters to back Marco Rubio in Florida's primary

Kasich is entering the must-win primary in Ohio this week

(CNN) —  

Ohio Gov. John Kasich isn’t competing to win Florida he said Sunday.

But even after rival Republican presidential candidate Florida Sen. Marco Rubio told his supporters that the best way to stop front-runner Donald Trump in Ohio is to support Kasich, the Ohio governor isn’t returning the favor.

Kasich told CNN’s Jake Tapper on “State of the Union” he isn’t going to tell his supporters to back Rubio or any other non-Trump contender in Florida.

“My people aren’t like robots – you know, go do this, go do that,” Kasich said, adding that he’s not competing to win Florida.

He made a similar statement Friday to CNN’s Erin Burnett.

“When people are for you, it’s pretty hard to tell them to not vote for you. But I’m not spending time in Florida. I’m here in Ohio,” he had said.

Rubio had said Friday that Kasich has a better chance of winning Ohio than he does – seeming to encourage his backers to support Kasich in a bid to deny Trump the 66 delegates of the winner-take-all state.

“At the end of the day, how do you tell your people that are for you to go vote for somebody else?” he said Sunday. “I’m not into a stop-Trump as much as I am be-for-Kasich movement.”

“Be for me,” Kasich said. “I’ve run an unwaveringly positive campaign since I got in this, and sometimes I’ve operated in total obscurity. It’s OK – we’re rising now,” Kasich said.

The Ohio governor’s campaign strategy requires a win in his home state, which votes Tuesday along with Florida, Illinois, North Carolina and Missouri.

Kasich defended his campaign style, saying he’ll remain optimistic even as Trump’s rallies have turned violent.

“You can go into a room and get people depressed and down and angry, or you can walk into that same room with people and give them hope,” he said.