Both the nine-point Democratic advantage in the first quarter and the five-point Republican edge in the fourth quarter are among the largest Gallup has measured for each party in any quarter since it began regularly measuring party identification and leaning in 1991.
The Democratic lead in the first quarter was the largest for the party since the fourth quarter of 2012, when Democrats also had a nine-point advantage. Democrats held larger, double-digit advantages in isolated quarters between 1992 and 1999 and nearly continuously between mid-2006 and early 2009.
The GOP has held as much as a five-point advantage in a total of only four quarters since 1991. The Republicans last held a five-point advantage in party identification and leaning in early 1995, after winning control of the House of Representatives for the first time since the 1950s. Republicans had a larger advantage only in the first quarter of 1991, after the U.S. victory in the Persian Gulf War led by then-President George H.W. Bush.
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