Not-A-Poll: Best Prime Minister Of The Last 45 Years: Round 3

"The Honourable Leader of the Opposition, Sir Billy Snedden, has broken his promise: the promise he made to me before the election. He promised not to tell any lies about me, if I didn't tell the truth about him."*

(image source, reuse subject to licence)

Two months ago I started a multi-round Not-A-Poll to determine this site's visitors' choice for the title of Best Prime Minister of the Last 45 Years.  The idea is that each month the Prime Minister in last place is eliminated and the rest continue until someone gets over 50% and wins.  There are rules permitting multiple exclusions in certain cases, to speed up the process a bit.  Each round runs for a month, so you can vote for different candidates from round to round if you want to. Multiple voting is in theory banned and adjustments may be made if I detect it, but there will probably be a lot of low-level multiple voting I can't detect or prevent. Comments about the merits of the contestants are welcome.