Sources tell Political Wire that Jack Ryan will announce his withdrawal from the Illinois Senate race later this afternoon.
Update: The Chicago Tribune confirms Ryan will drop out "within hours."
"Ryan conducted an overnight poll to gauge his support in the wake of the allegations made by his ex-wife in divorce records unsealed earlier this week. Aides said in advance his only options were to withdraw or to redouble his campaign efforts with a massive infusion of money from his personal wealth." Apparently, he chose the former.