U.S. Senator Joni Ernst has voted against confirming twelve of President Joe Biden’s cabinet appointees, a majority of the 23 cabinet officials who are subject to Senate confirmation. Senators have confirmed 21 cabinet members; Eric Lander is awaiting a vote as director of the Office of Science and Technology Policy, and the president has yet to announce a replacement for Neera Tanden, who withdrew her nomination to lead the Office of Management and Budget.

Only ten of the 50 Republican senators have voted against more of Biden’s appointees than Ernst: Josh Hawley, Ted Cruz, Rick Scott, Tom Cotton, Tommy Tuberville, Bill Hagerty, Rand Paul, Richard Shelby, Marsha Blackburn, and Tim Scott.

Iowa’s senior Senator Chuck Grassley has voted against five of the 21 cabinet members confirmed so far.

During their six years serving together in Congress, Iowa’s two Republican U.S. senators have rarely differed on matters that came to the Senate floor. But seven weeks into Joe Biden’s presidency, a pattern is emerging: Senator Joni Ernst is more inclined to reject the new president’s nominees than is her senior colleague Chuck Grassley.

In most cases, Ernst has not released any statement explaining her confirmation votes. Her staff have not responded to Bleeding Heartland’s inquiries about why she opposed specific nominees or her general approach to evaluating prospective cabinet members.

During their six years serving together in the U.S. Senate, Iowa’s Senators Chuck Grassley and Joni Ernst have rarely landed on opposite sides of a roll call vote.

It’s already happened twice during the first week of Joe Biden’s presidency.