At a glance: US presidential nominating contests and delegates counts for March 12
PRESIDENT Joe Biden and former President Donald Trump could each net enough delegates in the next round of nominating contests on Tuesday to clinch their parties' nominations. In the Republican race, 161 delegates are up for grabs across the four states holding contests: Georgia, Hawaii, Mississippi and Washington. Trump, the sole remaining Republican candidate, already has secured 1,060 delegates and needs at least 1,215 to win the party’s nomination. On the Democratic side, Biden has faced no serious challenges and also appears likely to clinch his party's nomination after Tuesday's primaries. He has 1,553 delegates so far and needs 1,968…