Racing Minister Jane Howlett on Tuesday announced she would drop her portfolios and move to the back bench.
It comes a day after calls from opposition MPs for her to resign over allegations her office provided misleading information about election text messages sent in breach of convention.
"It is obvious that the relentless personal and political attack on me is causing a significant distraction for the government, which I cannot allow to continue," Ms Howlett said.
"It has been an honour to serve the people of Tasmania across multiple portfolios. I have done so with a total focus on public duty.
Ms Howlett thanked her family and friends, adding Tasmanians should be concerned about a Labor opposition trying to "destabilise minority government".
Premier Jeremy Rockliff accepted Ms Howlett's resignation and also accused opposing parties of playing political games.
"In recent weeks we have seen a pattern of relentless political attacks that have added to distraction and taken attention away from the work that matters to Tasmanians," he said.
In addition to racing, Ms Howlett also held portfolios including tourism, hospitality and events, arts, and women and the prevention of family and sexual violence.
Ms Howlett faced more pressure on Monday after a committee was told her office was aware of text messages sent on behalf of state-owned entity TasRacing during the 2025 election.
The message, sent in apparent breach of caretaker conventions, was spruiking a Liberal policy.
In March, a statutory declaration from one of Ms Howlett's staffers said he had no knowledge about TasRacing's plan to issue the communications.
Ms Howlett has also faced questions about her use of $300,000 of taxpayer funds for unknown legal matters.
Her colleague Madeleine Ogilvie resigned from cabinet on May 30 after being accused of misleading parliament over her involvement in a court matter.
Ms Ogilvie said in November she wasn't involved in any court proceedings but later corrected the record to say she had initiated a Supreme Court matter.
The government said Ms Ogilvie has used $120,000 of taxpayer money on legal costs, but hasn't provided any further details about the matter.
