The candidates continue on the trail in S.C.

Sen. Marco Rubio of Florida, a Republican presidential hopeful, during a campaign event in Hilton Head.

Jeb Bush says he won’t blame President Barack Obama for any problems that exist if Bush succeeds Obama him in the Oval Office.

Bush told a crowd of mostly college students in Columbia Thursday night that “if it’s on my watch, I will be held accountable.” He says that’s how a leader should act.

Bush also says front runner Donald Trump is “hijacking the conservative cause.”

The former Florida governor told reporters that he had been “appalled” by some of Trump’s vulgarities on the campaign trail. Bush said “damn” on Thursday but said he is trying to give up cursing for Lent.

Earlier in the day, the campaign announced that former President George W. Bush would campaign in North Charleston on Monday with his brother.

A radio ad featuring the 43rd president has already been airing on airwaves in this early primary state, but the two have not appeared together. Matriarch Barbara Bush has previously campaigned for her son in early voting states.

Sen. Ted Cruz says Donald Trump’s foul language isn’t very presidential.

The Texas Republican told reporters in Fort Mill, that voters portably aren’t excited about the prospect of a president who, “when he gets rattled, when he gets upset, begins cursing and yelling vulgarities.”

Cruz said Trump “can choose to communicate however he likes.” But he added, that if Trump “wants to throw insults and vulgarities my way, I will not reciprocate.”

Cruz and conservative media personality Glenn Beck were addressing thousands at a mega church.

Trump continues to lead the polls in South Carolina. But Cruz is hoping to counter that by energizing evangelical voters.

The Ohio governor said he’s a “scrappy guy” who won’t “take crap from anybody” — but he still pledged to run a positive campaign.

Speaking to voters at a pancake house on Pawleys Island on Thursday, Kasich was responding to questions over how he’d cut through the noise of a chaotic GOP race.

He noted that his rivals are already ramping up attacks against him after his second-place finish in New Hampshire on Tuesday. He said he’ll defend his record, but doesn’t see the point of running a negative campaign. Still, he give Jeb Bush a poke.

“I’m worried about Jeb, it’s all negative. How the heck can you sell negative?” Kasich said.

He added, “I’m gonna keep doing what I’m doing, either it will work or it won’

But while Kasich wouldn’t attack his rivals, his advisers did.

Kasich’s chief strategist, John Weaver, characterized South Carolina as a “must-win” state for both Marco Rubio and Bush. Weaver said he’s eager to watch the “tarantula-scorpion battle” between the two.

Weaver’s comments, made on a call with reporters, served to downplay expectations for Kasich’s performance in South Carolina, where the Ohio governor has barely campaigned.

He said South Carolina has been a “firewall” for the Bush family and noted that some of Rubio’s advisers have roots here. Rubio campaign manager Terry Sullivan is from South Carolina.

Still, Weaver said Kasich is about to begin an advertising campaign in South Carolina, running ads on television from this Friday through next.

Kasich, meanwhile, heads to Michigan on Monday and Tuesday, then to Virginia and New York for a fundraiser on Wednesday before heading back to South Carolina.

The Florida Republican is turning up the heat on his Republican rivals as he campaigns in South Carolina.

Rubio jabbed Donald Trump, Ted Cruz and Jeb Bush on national security while facing hundreds of South Carolina voters at an Okatie retirement community Thursday morning.

“Donald Trump has zero foreign policy experience — negotiating a hotel deal in another country is not foreign policy experience,” Rubio charged.

He also questioned Bush’s foreign policy experience and criticized Cruz for supporting military budget cuts.

Rubio’s sharp remarks come a day after he promised to be more aggressive with other Republicans after faltering in last week’s debate — a performance he has apologized for after his fifth place finish in the New Hampshire primary.

Later in the day, while having a late breakfast with reporters at an Okatie Cracker Barrel, Rubio said that having a brokered national convention this year would not necessarily be a bad thing.

Rubio said his campaign is prepared to compete until the GOP nomination is decided — and even if that means the GOP has to select a nominee at its July convention.

He says the rules were never designed “to have everybody drop out after a certain time — it’s just the way it’s worked historically because people have run out of money or they don’t see a path forward. I don’t think it necessarily is negative.”

Having finished third and fifth place in the first two primary contests, Rubio said his team is focused on collecting delegates in what could become a long slog to his presidential nomination.

The Associated Press