The Republican-controlled Senate is the most unified in recent political history, according to a Saturday report from 538.

The average Republican senator voted in support of President Donald Trump’s agenda nearly 99 percent of the time, according to the report, much higher than any Senate in the last four administrations.

Nearly every GOP senator voted to support 100 percent of Trump’s policies. Only two senators voted in support of former President George W. Bush’s policies that much.

On the Democratic side, former President Barack Obama enjoyed a more unified Senate than Bush, but there were a handful of holdouts that voted with the president less than 80 percent of the time.

Democrats under former President Bill Clinton were less unified than under Obama, several senators crossed the aisle to oppose bills favored by the administration.

It should be noted that the data is incomplete. Statistics site 538 only recorded data on 32 votes in the Senate so far, and 19 of those votes were on confirmations to cabinet-level positions. The other 13 make up bills that the came to a vote before the Senate. In order for a vote to qualify for the measure, the Trump administration also needed to publish an official stance on the measure in order for it to be counted.

Republican Sens. Lisa Murkowski and Susan Collins were the first to openly oppose a Trump policy when they refused to vote in favor of Secretary of Education Betsy DeVos.

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