There is no verifiable evidence in the provided sources that Lev Parnas has publicly stated that President Trump is actively seeking to rig future elections to keep the GOP in power.
Fact Check: "Lev Parnas, father of Aaron Parnas, convict & former confidante caught in scheme that got Trump impeached, says the President is actively seeking to rig future elections to keep GOP in power" Verdict: Unverifiable. Check out the full analysis at Fact Verify: https://factverify.app

FactVerify
Source: factverify.com
What the Evidence Shows
The claim states that Lev Parnas, father of Aaron Parnas and a convicted associate involved in the scheme that contributed to Trump's first impeachment, has said that President Trump is actively seeking to rig future elections to maintain GOP control. The search results confirm that Lev Parnas is indeed a convicted former associate of Rudy Giuliani and was involved in activities related to the Trump-Ukraine scandal, which led to Trump's first impeachment.
Multiple sources (CNN, Yahoo, Forbes, WTAE) confirm Parnas's conviction and sentencing. Aaron Parnas is also identified as Lev's son and a pro-Ukraine influencer.
However, none of the sources provide any direct or indirect evidence or quotes from Lev Parnas making claims about President Trump actively seeking to rig future elections. The search results primarily focus on definitions of 'fact' and on Lev Parnas's legal situation but do not address or verify the specific statement attributed to him regarding election rigging.
Therefore, based on the available information, the claim cannot be confirmed or refuted and remains unverifiable.