Two Chu's and a Libertarian

I couldn't help wonder if there was any voter confusion considering both the Democrat and the Republican had the same last name when I read this Ballot Access News piece:

On July 14, California held a special election to fill the vacant U.S. House seat, 32nd district. The results: Democrat Judy Chu 61.67%; Republican Betty Chu 33.12%; Libertarian Christopher Agrella 5.21%.

This is the first time this district has had a contest between a Democrat and a Republican since 2002. In 2002, the vote had been: Democratic 68.79%, Republican 27.46%, Libertarian 3.74%. The district is centered in the Los Angeles County towns of El Monte and Covina.