IIRC, it has been shown that Democrats are more likely than Republicans to be included in the exit polls. Probably in part because many Republicans used to go out of their way, to avoid being polled. Maybe this has changed now; or maybe the exit polls continue to underestimate Republican voters. Either way, the actual percentage of “(D)” votes shouldn’t be greater than the exit polls indicate.
We’ll have to see how the IND House races go that every one’s watching. No surprises so far.