I did not pay attention to the news for a few days and am completely confused now. Last I saw, Kavanaugh was in the midst of his sexual assault hearings. I thought Trump had said he would let a further investigation be done. Fast forward a few days, I check on the news again, and I am seeing headlines about Kavanaugh already being sworn in and hearing cases as a supreme court justice!
I feel like there is a huge piece of news in the middle that is missing, yet I'm trying to Google it and all I find are articles from a few days ago about the sexual assault proceedings, about the FBI doing next to nothing for an investigation, and articles from now about Kavanaugh being sworn in and already sitting in the supreme court.
What are we missing? How did this just get fast tracked? Where is the politics in the middle? Where is the news leading up to a vote? Since the sexual assault allegations investigation sounds like a sham according to all the articles I see (many accusations were ignored), how was this allowed to proceed?
How did we just go from "Republicans would like this done before elections, but there will likely be a drawn-out affair with investigations and such," before the weekend to "Bam, it's all done and over with" after the weekend... what happened in between (or didn't happen that should have)?
Preemptive disclaimer
I am neither for nor against Trump or Kavanaugh, so this is not an "anti Kavanaugh" question, and I would prefer that we try to remain neutral. I don't know if he did or didn't do what he was accused of, and I didn't vote for either Trump or Clinton (though I did vote). But I am surprised about what just happened and am floored by the lack of proceedings between "we claim he raped us" and "he's our justice now" and am looking for the missing link.
Update:
Thank you to everyone who provided lots of pieces of data, both as answers and as comments!
Lots of people have criticized the answer which I ended up accepting. My acceptance of it does not in any way endorse the politics that happened which it describes. Whether or not that answer provides all the details that each side would like heard or justifies what happened is not part of my question.
Even if you do not like what happened politically, that answer does answer my question about "How did this just happen?" Several other answers do as well, but I can only accept one.