Platner seeks Maine Senate nomination and more primaries to watch today

Maine is one of four states with primary voters going to the polls on Tuesday, and it has one of the most closely watched races in the country, as Democrat Graham Platner seeks to lock up the nomination to take on incumbent GOP Sen. Susan Collins despite his recent string of scandals. There are also primaries in South Carolina, Nevada and North Dakota. Here are the major races to watch: Maine Senate race The Senate race in Maine has been a priority for Democrats seeking to topple GOP Sen. …