Democratic presidential candidate Joe Biden has steamrolled rival Bernie Sanders in primary elections in Florida, Illinois and Arizona.
Accelerating his momentum in the race, the former US vice-president made a clean sweep in all three states.
Mr Biden appealed for support directly to Sanders supporters.
With his hat-trick, Mr Biden took another big stride towards becoming the Democratic candidate who will face President Donald Trump in November.
With most Florida precincts reporting, Mr Biden led Mr Sanders by nearly 62% to about 23%, according to the Associated Press news agency.
In Illinois, with most precincts reporting, Mr Biden led the Vermont senator by 59% to 36%.
According to partial results from Arizona, Mr Biden had a double-digit lead on Mr Sanders.
In that south-western state, Mr Biden led among white voters by 51% to 32%. Hispanic voters were more equally divided between Mr Biden (45%) and Mr Sanders (44%).
Florida was the biggest prize of the night, awarding 219 of the 1,991 delegates needed to secure the Democratic presidential nomination.
Mr Trump won that traditional battleground state by 1.2 percentage points in the 2016 presidential election.
On the eve of Tuesday’s vote, Mr Biden was hoping to build on his victories in 16 of the last 21 state contests.
The former US vice-president’s triumph last month in South Carolina – his first ever primary win over three campaigns for president – resuscitated his faltering campaign. BBC