They give Bernie a 49% chance of winning a simple majority of the delegates, and establish a 24% chance that no candidate will come to the convention with enough delegates. Biden is considered to have a 19% chance. If you’re scoring at home, that only leaves 8% for all other candidates added together. (Basically 4% each for Warren and Buttigieg, and zero for the others.)
Bernie is also the betting favorite at this point, with Bloomberg now closest.
The Bookmakers now consider Trump a favorite in the 2020 general election, and his odds have been improving steadily in the past two months, starting the day the House voted to impeach. His betting line rose to +140 during the investigation phase, but dropped to -125 after the impeachment vote. The line now stands at -150. The overseas bookmakers show even shorter odds (typically about -162), and they are still shortening. They could shorten far more if and when Bernie’s nomination gets more certain.
(I don’t think there have been any “Trump vs Sanders” polls since the Iowa debacle and the Senate acquittal.)
Overall, despite some stops and starts, Trump’s likelihood of re-election has been increasing for a year now, as the Democrats have produced no clear, powerhouse contender.