New York, March 11 Former US Vice President Joe Biden has sealed his lead in the Democratic Party race to be the nominee to challenge President Donald Trump in November by winning the party poll in the key state of Michigan and three others.
With those victories on Tuesday, he has taken 15 of the 24 states where the intra-party polls have been held so far and increased the pressure on his sole rival Senator Bernie Sanders to drop out.
As of Wednesday morning Sanders was leading in two of the six states that went to the polls on Tuesday.
The defeat in Michigan dealt a serious blow to Sanders, who had won the state against Hillary Clinton in 2016.
The primaries held under the air of uncertainty from the coronavirus
( With inputs from IANS )