Ever since the 2016 election many Democrats have been frantically trying to find a way to get rid of Donald Trump. Their efforts have not been well thought out. They were suffering from what conservatives called Trump Derangement Syndrome. There was talk about the 25th Amendment and impeachment even before he took office.
Then they staked their hopes on the Russia collusion scandal. It turned out that the only evidence was a document bought and paid for by Democrats. They were desperate when that collapsed so pursued impeachment on multiple fronts. A committee is still trying to make the collusion story stick.
Once news of the Ukrainian phone call broke, even Nancy Pelosi couldn’t stop the impeachment effort. In spite of all the hype, they realized there was no way he would be convicted. However, they thought they could inflict enough damage to prevent his reelection. This was the same strategy Hillary Clinton followed. So much mud has been thrown at him that there is a diminishing return.
Now I believe they have a new strategy. Some have realized that going to the voters having done nothing but harass him is not a winning formula. They are now moving at lightning speed (something Congress rarely does) to get him impeached before Christmas. Then they can actually get something done. They already approved a budget and game President Trumps things like the new Space Force.
News cycles are very short. It is possible that the impeachment will not be a major issue in the fall elections. I don’t know if that helps Democrats or Republicans but it is good for the country.