For background on this, see this Swing States Update post. The current toss up map is here; 10 states remain in the toss up category based on the criteria of being listed as a toss up by one or more of 4 professional pundits.
NBC and Cook Political have made some race ratings changes this week. Those that impact the toss up states are shown in the accompanying table. Seven states are now seen as toss ups by all these groups: Colorado, Florida, Iowa, Nevada, New Hampshire, Ohio and Virginia. Iowa and New Hampshire are new this time. There’s a difference of opinion on North Carolina, Pennsylvania and Wisconsin.