DES MOINES — A new CBSNews/YouGov poll shows the Democratic race for president is tightening at the top in Iowa.
Former Vice President Joe Biden, former South Bend Mayor Pete Buttigieg and Sen. Bernie Sanders are in a three-way tie according to the CBS News Battleground Tracker poll published Sunday.
The three are each polling at 23% in Iowa.
The CBS poll has a margin of error of about 4%.
Comparing Sunday’s numbers to an Iowa State University/Civiqs poll released in December, Buttigieg dropped a point, Sanders gained two and Biden surged with an eight-point leap.
Sens. Elizabeth Warren and Amy Klobuchar rounded out the top five with 16 and seven points respectively.
Warren dropped two points, while Klobuchar added three since that ISU/Civiqs poll in December.
The CBS poll released Sunday was compiled from a sample of 953 registered voters who are Democrats or Democratic-leaning Independents.
The Iowa Caucus will take place on Feb. 3.