The opposition is already setting up the Russia excuse that didn’t work in 2016 for 2020. From Caitlin Johnstone at medium.com:

“Putin” is the number one USA trend on Twitter as of this writing, which is always a reliable sign that something very stupid is happening in American media.
“Putin” is once again the hysterical shrieking buzzword of the day because Donald Trump openly boasted at a press conference of having had an hour-long phone call with the Russian president, in which he claims the two leaders discussed nuclear de-escalation, Venezuela, North Korea, and the discredited “collusion” narrative. When asked whether he’d told Putin not to meddle in the 2020 US elections, Trump replied, “We didn’t discuss that.”
“Had a long and very good conversation with President Putin of Russia,” the president tweeted. “As I have always said, long before the Witch Hunt started, getting along with Russia, China, and everyone is a good thing, not a bad thing. We discussed Trade, Venezuela, Ukraine, North Korea, Nuclear Arms Control and even the ‘Russian Hoax.’ Very productive talk!”