Rivals worry Sanders building 'insurmountable' Super Tuesday lead

Senator Bernie Sanders’s (I-Vt.) rivals are sounding the alarm over his growing strength and warning that he could effectively secure the presidential nomination on Super Tuesday if Democrats don’t quickly align behind an alternative.

The clock is ticking fast toward March 3, when about one-third of all delegates will be allocated after 14 states and territories get to vote in the Democratic primary race.

While Sanders and former South Bend, Ind., Mayor Pete Buttigieg have effectively split the delegate hauls from Iowa and New Hampshire, Sanders is the favorite to...