@maporsche,
It's a little difficult to see how the victory of a candidate who walks, swims and quacks like a Republican means a district is becoming more "left of center" simply because he has a "D" next to his name. Especially when the
genuine Republican is a real jerk and looks like an old math teacher when standing near the young Dem duck.
I take your point about it being fine with you though. It would be fine with me if the roles were reversed and there was no other choice. Even if Lamb doesn't reveal himself to be a progressive wolf, he is more than likely to very frequently vote with his caucus. Joe Manchin of WV is his clone in the Senate (or Lamb's the clone of Manchin), and Manchin votes with the Dems a lot more often than I suspect a great number of his voters expected based on his last campaign and his public comments. He's walking a tightrope and the only way his party will cut him any slack and not punish him is if he tows the line a lot more than his rhetoric would suggest. The same will happen with Lamb and so you'll have even more to be OK with than you might now think.
Nate Silver's often fascinating website "fivethirtyeight," has a section in which it reports on how members of Congress are voting in line with Trump. Manchin has voted in line with Trump 59.7% of the time, which may seem like a lot, however, Silver (or his team) predicted that he would do so
93.6% of the time based on Trump's margin of victory in WV.
Trump won Lamb's district by something like 20 percentage points so I would imagine Silver will predict a high percentage of Lamb's votes will be in line with Trump, however, I'll wager we'll see roughly the same actual results as we see with Manchin. Lamb will also have the benefit of knowing that he won't be running for re-election because his district would exist in a year.
You can call it representing the will of their voters or being unprincipled whores, but, including Manchin, there are four Dem Senators who have vote in line with Trump over 50% of the time and it's not surprising that the other three are from Indiana, South Dakota, and Alaska, where Doug Jones has voted in line with Trump over 60% of the time.
There are three Dems who are in line over 40% of the time. Claire McCaskill, who is hardly a Blue Dog, leads the way with 47% because Trump's margin in Missouri was 18.6. Bill Nelson of FL follows the profile at 40.9% but Virginia (a state that went for HRC) is a surprise at 43.3%
What's not a surprise is that every Dem Senator who is being talked about for the 2020 election has fully embraced #RESIST: Gillibrand of NY voted in line with Trump only 7.5% of the time. NY went big for HRC, but even still, Silver predicted 22.6% This clearly means that Gillibrand who may be more ambitious and less principled than HRC is casting a lot of votes simply to be on the record as opposing Trump. These are issues where most of her Dem colleagues are voting in line with Trump which strongly suggests they are bi-partisan matters, and she regularly votes against Silver's prediction of how likely she would be to agree with the "Trump position." For instance, Silver assessed that there was a 72% chance that she would agree with Trump on the December 7th bill that extended government funding for two weeks...she voted against it. The exact same pattern plays out for Elizabeth Warren, Corey Booker, Bernie Sanders and Kamala Harris.
If anyone is looking for courageous and principled Democrats (as wrongheaded as they may be) or arrogant schmucks who don't care what their constituents want Silver's list suggests: Tammy Baldwin of Wisconsin, Sherrod Brown of Ohio, and John Tester of Montana
On the Republican side of the leger are: Rand Paul of Kentucky, Marco Rubio of Florida, Corey Gardner of Colorado, Dean Heller of Nevada, Patrick Toomey of Pennsylvania, and Ron Johnson of Wisconsin
I won't run through the list of House Representatives but voting records can tell you some important things about these people.