Iowa caucus-goers’ top concerns appear to be health care and climate change, according to data analysis by the Des Moines Register.

An analysis of more than 300 questions asked by potential voters at 46 candidate events over the course of 30 days found 27 questions about climate or environmental issues. The candidate receiving the most climate-related questions was former Rep. Beto O’Rourke (D-Texas), with seven, followed by Rep. Eric Swalwell Eric Michael SwalwellSwalwell calls for creation of presidential crimes commission to investigate Trump when he leaves office 'This already exists': Democrats seize on potential Trump executive order on preexisting conditions Swalwell: Barr has taken Michael Cohen's job as Trump's fixer MORE (D-Calif.) and Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.), each with four.

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Candidates were asked 33 questions about health care. The candidate asked most about the issue was former Gov. John Hickenlooper John HickenlooperCook Political Report shifts Colorado Senate race toward Democrat Willie Nelson playing at virtual fundraiser for Hickenlooper Gardner on court vacancy: Country needs to mourn Ginsburg 'before the politics begin' MORE (D-Colo.), who was asked about it 11 times, followed by Booker, who was asked four times. The issue represented about 10 percent of the questions in the Register’s sample.

The newspaper logged 21 questions relating to education, with O’Rourke again leading with seven questions, followed by Booker with four and Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.) with three.

Candidates were also asked about varying issues that in some cases were specific to the region, such as a question to Sen. Elizabeth Warren Elizabeth WarrenDimon: Wealth tax 'almost impossible to do' CNN's Don Lemon: 'Blow up the entire system' remark taken out of context Democrats shoot down talk of expanding Supreme Court MORE (D-Mass.) about increasing suicide rates among farmers, while others were specific to candidates themselves, such as questions to O’Rourke and Booker about their financial and political ties to charter schools.

Personal questions about the candidates also made up a significant portion of the questions, with the newspaper’s sample including 18 such questions, including one to Booker about his family, which led the New Jersey senator to discuss his relationship with actress Rosario Dawson, which he made public in response to questions about the prospect of a bachelor as president.

“I’m sure it drives communications professionals and staff crazy going off the script like that,” Jake Oeth, who led former Maryland Gov. Martin O’Malley’s 2016 Iowa caucus campaign, told the Register. “But I think it allows the candidate an opportunity to connect on a personal level with the caucus-goer by answering their question specifically. To be fully prepared to be president, I think you should be able to answer questions on the issues of the day without having a two-hour prep session or poll-testing an issue.”