(CNN) Former President Barack Obama said Sunday that Republicans have "racked up enough indictments to field a football team" while campaigning for Democrats ahead of the midterm elections on Tuesday.

Obama cast President Donald Trump's administration and Republicans who control both the Senate and House of Representatives as corrupt.

"All right, so now they've had two years of total control in Washington," Obama said at a rally in Gary, Indiana, while campaigning for Democratic Sen. Joe Donnelly. "What have they done with that power?"

"Nah, nah, nah, it's not true. They haven't done nothing. They've done something," Obama said in response to shouted answers from the crowd. "They promised they were going to take on corruption in Washington. Instead, they've racked up enough indictments to field a football team."

"Nobody in my administration got indicted," Obama said. "Which, by the way, is not that high a bar."