Afterward, jurors were to get the case and begin deliberating.
Prosecutors allege DeLay used his political action committee to illegally channel $190,000 in corporate donations into 2002 Texas legislative races through a money swap.
DeLay denies wrongdoing. He and his attorneys say no corporate went to Texas candidates and the money swap was legal.
The once powerful but polarizing Republican Houston-area congressman faces up to life in prison if convicted.