For what it’s worth Intrade shows the following odds-
California Senate (Barbara Boxer) to win- Bid 75
Delaware Senate Democrat to win- bid 89
Nevada Senate Democrat to win- bid 55
Connecticut Senate Democrat to win- bid 85
Any bid over 50 means they are slanted to win. For those unfamiliar with Intrade these can change dramatically in a short time period. But I have often found Intrade to be a reliable indicator. It will be interesting to monitor these numbers in the next month.