US House has votes to back deeper impeachment measures
The vote was 232-196
So far only 2 Democrats have voted against the probe and no Republicans have broken ranks.
The vote doesn't begin a formal impeachment but sets up the mechanism by which articles of impeachment could be drafted by a House committee. The legislation also sets up public hearings, so less will take place behind closed doors (even though it all leaks anyway).
I'll update with the final voting numbers when they're out.
Update: The vote was 232-196.