“The Trump administration has recently escalated its campaign to cast doubt on the 2020 election as part of a broader effort to undermine future elections.”

• The provided sources show that Fulton County has been at the center of unfounded claims by Trump and his allies, and the FBI seizure of ballots is part of an effort to investigate those claims, indicating an escalation of the campaign to cast doubt on the 2020 election.
• While the claim of 'recently escalated' is not directly quantified, the actions described support the overall assertion.

The provided sources show that Fulton County has been at the center of unfounded claims by Trump and his allies, and the FBI seizure of ballots is part of an effort to investigate those claims, indicating an escalation of the campaign to cast doubt on the 2020 election. While the claim of 'recently escalated' is not directly quantified, the actions described support the overall assertion.