Waco, Texas (CNN) – Mitt Romney picked up Texas-sized donations on Tuesday during a fund-raising blitz through the Lone Star state.
The Republican presidential candidate expected to raise $15 million from four campaign fund-raisers Tuesday and Wednesday in Dallas, Fort Worth, San Antonio, and Houston, a major donor to his campaign told attendees at one event on Tuesday.
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Dallas entrepreneur Ray Washburne divulged the high-dollar figure to nearly 500 people attending the first event held at the historic Belo Mansion in Dallas, which was expected to raise $3.5 million when combined with the haul from another dinner at a private residence Tuesday night. Participants contributed $2,500 to get in the door and paid as much as $10,000 for a photo and $50,000 for dinner.
The checks are split between members of the Romney Victory Fund, an umbrella organization including Romney's campaign, the Republican National Committee, and several state-level groups.
According to a reporter who was permitted to cover the fund-raiser and brief other reporters, Romney stepped to the podium and joked that Washburne had assured him that if the $15 million figure wasn't reached, "he'll write a check for the balance."
The Romney campaign has so far raised more than $5.9 million in Texas, according to the Federal Election Commission reports including donations through the end of April. President Barack Obama and his Democratic allies have raised more than $6.4 million from the Lone Star State in the same time period.
In addition to helping fill his campaign coffers, Texas also helped Romney towards becoming the GOP presidential nominee. Last week he crossed the 1,144-delegate threshold after picking up more than 100 delegates from the Republican primary here, but he won't be crowned the party's official nominee until the Republican National Convention in Tampa this summer.
Romney also scheduled two public campaign events during his two-day visit.
According to the FEC, Texans have raised more than $30 million for Republican and Democratic candidates for various offices combined this year, coming in second behind California, which has brought in more than $43 million in 2012.
In May, Romney hauled in about $15 million from more than eight fund-raisers during a weekend swing through New York and Connecticut.
– CNN Political Producer Rachel Streitfeld contributed to this report