Procedures of the Landsraad
B. Votes
1. Each noble of Patrician Rank is allocated 5 votes.
2. Each noble of Equestrian Rank is allocated 2 votes.
3. Each noble of Civitas Rank is allocated 1 vote.
4. Each noble may only vote with one rank active at any time. Should a noble control more than one rank for voting purposes, whether outright or by Emissary, their highest rank shall be considered to be active.
a. A hereditary rank is considered higher than a non-hereditary rank.
H. Emissaries
1. A voting noble may appoint a representative known as an Emissary.
a. Should a noble hold more than one voting title at a time, they may grant one of their voting titles to another person as an Emissary and retain all other voting titles.
2. An Emissary shall be granted the vote and voice of a noble, to represent that noble within the Landsraad.
3. While a noble has an Emissary appointed and active within the Landsraad, said noble may only speak or vote through that Emissary, unless they retain another voting title themself.
4. A noble may temporarily revoke the status of an appointed Emissary for a single debate, at which point the Emissary must retire from the debate without comment.
5. If an Emissary has been forced to retire from a debate by the Noble they represent, they cannot return to the debate, nor may another Emissary be appointed.
6. A noble's Emissary must reside within the subdivision that Noble's House. the Noble resides within or rules.
7. A noble may only have one Emissary appointed at any given time.
What it means:
A person may only vote with one title, whether they control one or many, control it themselves
or control it via an Emissary [Erik, your bill merely superseded two titles held by one person, a title is not granted to an emissary so it wouldn't have stopped them controlling two votes].
A person with multiple titles may grant
one of their titles to an emissary. If the emissary has another title which is lower, this now supersedes the lower title for the emissary. If they don't, they now vote with that title as per normal. If the original noble has other titles, they can still speak and vote with one of those other titles.
Finally, an emissary must be in the same house as you, not in a subdivision you control (because with the current system, if you guys actually want non-hereditary titles to be able to emissarise, they need to grant it to someone in their house because most non-hereditary title holders thus far have not ruled over other nobles).
It would be worth adding a section to the lawbook which says inactive titles can't be taxed, but I'm not sure how keen you are on the lawbook to refer to the Procedures.