SIOUX CITY, IOWA - APRIL 1: Senator Ted Cruz (R-TX) addresses voters during a town hall meeting at the Lincoln Center on the campus of Morningside College April 1, 2015 in Sioux City, Iowa. (Photo by Eric Francis/Getty Images)

A handful of political action committees created for Sen. Ted Cruz (R-Texas) are expected to bring in $31 million this week, an eye-popping haul for a presidential candidate who has surprised many with his early ability to raise money.

The four super PACs, which will operate under the name "Keep the Promise," submitted paperwork to the FEC Monday. They will be led by Dathan Voelter, an Austin CPA and attorney who is close friends with Cruz.

"Our goal is to guarantee Senator Cruz can compete against any candidate,” Voelter said in a statement confirming the haul, which was first reported by Bloomberg. “Supporters of the Senator now have a powerful vehicle with the resources necessary to aid in his effort to secure the Republican nomination and win back The White House.”

Cruz's ability to raise money has been one of the biggest question marks of his newly-minted candidacy. So far he is surprising many -- including himself, he said on the stump last week in Iowa. Cruz's own campaign raised $4 million during its first eight days, a haul that relied mainly on small-dollar donations.

[Ted Cruz raised more than $1 million for his presidential bid in first day, says his campaign]

But the Texas senator is showing that he can rake in the big dollars as well. In the months before his candidacy he quietly laid the spadework for large-dollar donations, meeting privately with big moneyed supporters in New York, California and Florida. He is in the middle of a 10-city fundraising blitz this month; Monday he held an event in Austin and Tuesday night he attended a fundraising dinner in San Diego.

Cruz's campaign made its first ad buys of the cycle Easter weekend, purchasing national time during "Killing Jesus" on Fox and ads in four primary states during NBC's "AD: The Bible Continues" on NBC.

According to Voelter, we should expect to see more.

"The Keep the Promise network of PACs is here to make the sure the common-sense, conservative message of Senator Cruz reaches as many ears as possible across America," he said. "Keep the Promise can provide the 'appropriate air cover' in the battle against Senator Cruz's opponents in the Washington establishment and on the political left."