Americans for Prosperity, the political arm of the powerful Koch network, formally endorsed Nikki Haley’s presidential campaign on Tuesday, promising to commit its nationwide army of activists — and virtually unlimited funds — to helping Haley defeat former President Donald Trump in the GOP primary contest.

“AFP Action is proud to throw our full support behind Nikki Haley, who offers America the opportunity to turn the page on the current political era, to win the Republican primary and defeat Joe Biden next November,” AFP president and CEO Emily Seidel wrote in a memo announcing the group’s decision.

“She has what it takes to lead a policy agenda to take on our nation’s biggest challenges and help ensure our country’s best days are ahead. With the grassroots and data capability we bring to bear in this race, no other organization is better equipped to help her do it.”

The endorsement may help Haley address one of her biggest strategic liabilities.