(CNN) – Donald Trump lent some star power to Mitt Romney on Wednesday by opening his Rolodex and placing fundraising calls with Romney.
Trump raised "a substantial amount of money for the governor" during an hour of calls, according to his media liaison, Michael Cohen.
Trump considered a presidential bid himself, then endorsed Romney in early February, telling reporters he brought the former Massachusetts governor "a lot of good relationships with a lot of groups."
"If you look at the tea party. If you look at the Christian coalition. If you look at a lot of different groups, I have very, very strong relationships with them," he said.
Cohen told CNN that Trump is "prepared to assist [Romney] in any way the governor sees fit."
"Donald Trump doesn't only come with his larger-than-life persona, he comes [with] his personal relationships, which are substantial and far-reaching," he said.
- CNN Political Producer Rachel Streitfeld contributed to this report.