President Donald Trump has said the final sprint before Tuesday’s midterm elections reminds him of the days before his 2016 win.
Mr Trump told a rally crowd in Macon, Georgia that “there’s electricity in the air like I haven’t seen since ’16”.
Mr Trump was holding a pair of rallies Sunday for Georgia’s Republican gubernatorial candidate Brian Kemp and in Chattanooga, Tennessee, for Republican Senate candidate Marsha Blackburn.
His predecessor Mr Obama was travelling to Gary, Indiana, on behalf of Senator Joe Donnelly, who faces a stiff challenge from Republican businessman Mike Braun.
Later in the day, the former president was campaigning in his hometown of Chicago for businessman J.B. Pritzker, the Democrats’ nominee for Illinois governor.
Without invoking his name, Mr Obama has accused Mr Trump of lying and “fear-mongering” and warned Democrats not to be distracted.
Mr Trump has punched back, accusing Mr Obama of leaving behind a trail of broken promises on trade, the economic recovery and a promise during his presidency that patients could keep their doctors under his health care law.