I'm a Yank, but will take a stab at a simplified explanation (the only kind I am capable of in this regard). The majority in the House of Commons passed a law forcing BoJo to ask the EU for an extension, past the Oct 31st deadline. Johnson proposed to hold a general election, so the people could have a sa  2006  y. Even though the opposition parties have been clamoring for an election, as they have no confidence in BoJo (i.e., he's not acting like a globalist), they didn't take him up on his offer (since they know the population is getting really pissed at all the backstabbing politicians). They in effect, gave his government a full vote of confidence. A law has to be signed by the Queen, but the PM can make a face-to-face case for her not signing. This happens occasionally, and when it does the Queen almost always defers to the PM's advice. The feeling is that if BoJo makes the case, the Queen will not sign the law, and thus let the no-deal exit go through on October 31st.