Did the Democrats help Trump become President?

I can’t believe I am asking this but did Democrats either with intention or inadvertently help Trump become our president? I stumbled across an article on RedState website that is strongly suggesting that 38% of the voters in the Republican primary were Democrats and by who the Dems voted for were routinely the perceived weakest candidate….Trump. According to the article, even in closed primaries there are records of large numbers of Dems reregistering as Republicans.

AFAICT, RedState is a legit site, a conservative think tank that was strongly against Trump in the primaries. They say this about the primaries in the story…

“In any event our election was stolen. Trump would be in fourth, or worse, without Democrats, he would probably only have won New York and considering he would be doing so badly when that election happened it is unlikely even there. We have been tossed to the ground and electorally gang raped by Democrats.”

My initial reaction to the story was suspicious and kind still is and why I am asking y’all here. Even I thought Trump was the worst possible choice for the Republican party and this scenario in this article would explain the unexplainable in how Trump won the primaries. Was this a fix to ensure a Hillary victory that backfired? Good intentions gone bad?

I would like to either corroborate this story or expose it as pure bunk. Can you help?