Obama contest winners have lunch with him

It would be interesting to know how many people entered this contest to have lunch with the president. I assume that one reason for this contest is to try to lower the average size of contributions to the Obama campaign. Another reason might be to get people invested in his reelection. From the AP:

In a sort of power lunch for the not-so-powerful, President Barack Obama broke bread Friday with four winners of a contest for people who give to his campaign in small amounts.
The suggested donation to enter the drawing: $3.
The winners, including a teacher and an Afghanistan war veteran, gathered at Scion, a restaurant serving trendy, Asian-inspired cuisine in Washington. The Obama re-election campaign has offered the meals with the president, first lady Michelle Obama and Vice President Joe Biden to boost online contributions. . . .