A campaign that focused on the climate change issue on the eve of his first major speech on the issue in the United States is likely to be one of the most closely watched in the 2016 campaign, with one candidate seeking to win over liberals while the other trying to shore up support among moderates.
The two sides have been competing to portray themselves as allies against climate change in the weeks leading up to the United Nations climate change summit in Paris, where more than 190 nations are set to discuss a deal to limit global warming.
The battle lines are drawn over whether to use the term “cap and trade” to regulate carbon emissions and whether to seek a carbon tax as a way to finance a carbon market.
While a cap-and-trade plan was passed in New Jersey in February, Senator Cory Booker, the Republican candidate for the U.S. Senate in the state, has yet to unveil his carbon pricing plan.
His plan, which he will formally unveil on Monday, is likely tied to the Democratic platform, which calls for a “carbon tax” that would be revenue-neutral.
The U.N. climate change talks will be held in New York City and Paris, with other cities and states hosting a series of talks in other countries to discuss ways to limit climate change.
The candidates also have differing views on climate action in general.
Both Booker and Democrat Cory Booker Jr. have been critical of President Donald Trump’s efforts to roll back the Clean Power Plan, which requires coal companies to reduce emissions and cut emissions to protect the climate, while Booker has said he supports the plan.
“I’ve been saying for years that we should not put the coal industry on a pedestal,” Booker said in a speech last month in his home state of New Jersey.
“That’s a bad idea.”
Booker said he will introduce his plan “when it’s ready,” but he has not yet said when it would be released.
He has said the platform will provide a blueprint for how the United Kingdom should take on climate leadership, and he has called for a carbon price to be part of the deal.
The policy would be the first time the United states has enacted a carbon pricing system in the global climate negotiations, and it would also mark a major shift in how the U:s economy is viewed as a potential driver of climate change, said Andrew Rosenberg, an expert on global climate change at Columbia University’s Earth Institute.
“It would be an important development in how U.K. politics is viewed internationally,” he said.
Booker, a liberal Democrat, is a former U.A.E. chief executive who served as New Jersey’s governor from 1999 to 2013 and a U.G. commissioner for international relations from 2006 to 2010.
He is a member of the United Nation’s Council of the Americas.
Booker was one of a small number of U. S. senators to vote against the Kyoto Protocol in 2015, saying it did not go far enough in curbing greenhouse gas emissions and the cost of implementing it was too high.
In addition to New Jersey, Booker’s political opponents have been making moves to court conservatives and to try to portray him as a climate change skeptic.
Senator Marco Rubio, a Florida Republican, has been using his campaign as an opportunity to portray Booker as a moderate, while Republican Senator Ted Cruz has been attacking him for his past support for the Kyoto deal and his recent comments that climate change is a hoax.
“The New Jersey senator has made it clear that he is committed to a policy of reducing greenhouse gas pollution,” Rubio said in an advertisement released this week.
“This is a big change from the positions of the last three U. N. climate champions.”
Cruz has also used his campaign to portray the New Jersey Senator as a liberal.
Cruz’s campaign, in a television ad airing this week, called Booker “a hypocrite” who has “gone to Washington, D.C. to take the position that global warming is a scam.”
Cruz said Booker has “sought to undermine our nation’s ability to control climate change,” and called on him to “join the fight for clean energy jobs, a carbon-free economy, and a sustainable future.”
Rubio has not taken a position on the Paris deal, which will be formally adopted on Monday and must be ratified by all nations at the U.:N.
His campaign has also focused on other issues, including trade and taxes, and is trying to position himself as a candidate who can bring more support to the Republican Party in states that Trump won last year, including New Hampshire, Iowa and South Carolina.
Rubio is seen as a likely future candidate for president if Trump loses the nomination to Hillary Clinton, and his campaign has been trying to make the case that he can beat Clinton and win the White House.
Rubio’s campaign released an ad on Friday, which was the first of many that will air on television this week that will attack Booker on his record on