Please stop. This is pure speculation. There was no recent polling data coming out of Maine, and anecdotal comments about voters being there to support Trump are useless.
It is clear that the polls in other states going into Saturday were accurate regarding Trump. Trump hit his polling numbers in the places we had recent numbers. It is Cruz that took the undecideds and voters from Rubio, giving him the huge boost. We will probably see the same phenomenon going forward.
Why is this happening? It’s likely due to Romney’s speech (which actually surprises me a lot), and Cruz actually talking policy at the debate, while Rubio and Trump argued like school boys. Trump’s act is only working for a fixed percent of the Republican electorate, albeit a large percentage (but not a majority). The rest are taking a pass.
Trump may win, but please don’t accuse anyone of cheating unless you actually have some proof.