Republican Gov. Kim Reynolds is transforming the Iowa Supreme Court from one that leaned liberal to a solidly conservative body, prompting concerns among critics that it could erode past support for civil liberties as well as abortion and gay rights.

Through a combination of coincidence, a mandatory retirement age of 72 for judges and changes in the selection process that favor Republicans, Reynolds could make the most appointments to the seven-member court since former Democratic Gov. Tom Vilsack named five from 1999 to 2007.

Governor for just over two years, Reynolds already has appointed two justices — one due to illness and another a retirement . One of her appointees is a member of the conservative Federalist Society, which has been instrumental in vetting judges for President Donald Trump's aggressive push to remake the federal courts.

The current balance of the court is 5-2 Republican, although GOP appointee Chief Justice Mark Cady often sides with liberals. Reynolds will get to replace Brent Appel, a Democratic appointee, who turns 72 in 2022, the last year of her current term. If she runs and wins a second term as governor she could replace David Wiggins in 2023, the last retiring Democrat appointee and Cady in 2025 to complete the conservative transformation.