> The hereditary peers were elected

By a larger pool of hereditary peers. Previously several hundred members of the aristocracy were all entitled to a seat in there by virtue of their birth and title alone. After reforms in 1999 this group had to nominate from within themselves a subset of 92 hereditary peers who would be allowed to participate in the chamber.

If by "the voters" you mean the general public, then no, they had no say at all.