Texas Sen. Ted Cruz's presidential campaign raised $20 million during the final three months of 2015, according to the Cruz campaign. The end of the year fundraising total represents a marked increase compared to his third quarter fundraising sum of $12.2 million.

Cruz campaign manager Jeff Roe wrote a memo to campaign staff that details how the campaign hauled in $45 million during the 2015 calendar year. More than 300,000 supporters donated to the Cruz campaign, and the average donation amounted to $67.

"Some campaigns are focused solely on a man, some on a movement. Ours is a hybrid of the two built to win," Roe wrote. "There's still plenty of work to be done to make Ted the Republican nominee and the next President, but as 2015 comes to a close, we are exactly where we want to be. Go. Fight. Win. This is OUR time!"

Roe's memo also notes that the campaign has coordinators in each of the 163 congressional districts in the 24 states with nominating contests scheduled before March 15th. The campaign also boasts its success in recruiting more than 175,000 volunteers, and a donor base residing in two-thirds of all zip codes in the United States.

Cruz ranks first in the Washington Examiner's newest GOP presidential power rankings.