I suggest a uniquely American system for the Conservative Party leadership races.
Step 1 - In order to be placed in nomination for the position of Leader, an MP or Senator has to be nominated by 10% of the parliamentary party (MPs and Senators).
Step 2 - All nominated candidates compete at a national convention with delegates using a Ranked Choice Voting system till only two candidates remain.
Step 3 - All paid party members vote on the final two candidates in a postal ballot.
This combines the methods of the UK Labour (nomination process), Canadian Conservative (Convention), and UK Conservative (final members vote) parties.
Comments?