But there's no "proof" that Burns, Rehberg or Rosendale would've easily secured the 3,563 votes had the Libertarian dropped out. They could've just sat it out. So it's hard to say if these Libertarian voters would've voted for Burns by default or had sat it out completely but what is proof is that Tester's campaign always knew it was about voter turnout and not relying on a third party candidate to tip the race in his favor as his Hail Mary to win elections.
But there's no "proof" that Burns, Rehberg or Rosendale would've easily secured the 3,563 votes had the Libertarian dropped out. They could've just sat it out. So it's hard to say if these Libertarian voters would've voted for Burns by default or had sat it out completely but what is proof is that Tester's campaign always knew it was about voter turnout and not relying on a third party candidate to tip the race in his favor as his Hail Mary to win elections.
That's a very different point. No, nothing that didn't happen can be proven 100%. So why did you try to claim above that it was?