The reality, for better or worse, here as in the UK is that a local candidate's merit is of very little importance in determining the result as compared with the party's national/state standing.
Agreed - the vast majority of Australians vote on party lines, not the individual representative within each electorate.
As always, there are a few exceptions, and all of the independents are examples of someone who stands on their own merits and has no ruling party. These people are crucial during hung Parliaments, as we are seeing Federally now, and largely irrelevant when the major parties have a substantial working majority on the floor.
Good intelligent hard-working members of any party can find themselves swept out of office by a tide that is beyond their influence. At the margin your personal performance might keep you in office, but it's probably going to make a few percent difference to your share of the vote.
Agreed again. Even extremely high profile candidates that don't have the backing of a Party struggle to find traction with an electorate.
In one state seat here in Perth, the was a lady who was a Liberal Party member who was very strong and locally seen as a brilliant example of a local member. Unfortunately, after about 3 terms of office, she thought she was bigger and better than the Party. She quit the Party and remained as an independent, then stood for re-election as an independent.
The incoming endorsed Liberal Party member easily won the vote and swept her aside. All of her work over more than decade counted for nothing to the voters. The loyalty was not repaid personally, they wanted the Liberal Party endorsed candidate, not some high profile individual who once elected would be accountable to no-one.
The background Party heirachy who call the shots are a very strange lot indeed. They want a small say in things individually, a large say in things collectively, but never put themselves "out" in the public eye.