The partial government shutdown that commenced Tuesday is a showdown between conservative Republicans and Democrats over the fate of the Affordable Care Act — ObamaCare.

If there’s any doubt over the location of the battle lines, take a look at our elected federal officials’ websites.

Sen. Bob Casey apparently regards the shutdown as a labor lockout forced by the House of Representatives’ tea party-dominated Republicans.

Casey’s home page, www.casey.senate.gov, bears a prominent message, appropriately shaded in pink-slip pink, and stating: “Unfortunately, due to the absence of a congressional agreement on appropriations for Fiscal Year 2014, my Senate office is unable to maintain normal operations.”

Click on any link to subsequent pages on his website, and you get the same message. But you can still navigate to Casey’s statement, issued the day before the shutdown, blaming House Republicans for allowing “a tea party takeover” in Washington.

The message is clear: Casey and his staff are unavailable until further notice — and it’s the Republicans’ fault.

It might be considered unfortunate that the shutdown coincides with the first day individual Americans are eligible to register for benefits under the Affordable Care Act. Casey, the county’s only elected official in Washington who supports ObamaCare, isn’t available to answer constituents’ questions about it.

Sen. Pat Toomey’s home page, www.toomey.senate.gov, gives a different impression. Draped in red, white and blue, his home page message states simply: “Contacting My Offices During the Shutdown [Read Now].” It’s as if Toomey, a Republican, is saying, “We’re here for the duration, pardon any delays, but we’re still here working.”

The underlying message is a little less direct: The Senate’s Republican minority can’t do much to sway the health care debate — think Ted Cruz reading “Green Eggs and Ham” — but Toomey and his staff will do whatever they can to make the best of a bad situation. Just don’t blame him for what Democrats did in the Senate — or for what Republicans did in the House.

Rep. Mike Kelly’s home page, www.kelly.house.gov, presents more of a business-as-usual impression; rather, Kelly’s page was designed in a way that takes such political battles in stride while sticking to its primary mission: promoting the Republican congressman from Butler. There are links to Kelly’s response to the shutdown, to a Kelly interview discussing his proposed alternative to ObamaCare, and Kelly’s defense of the House continuing resolution that would have delayed ObamaCare for a year — the bill which was rejected Monday night by Senate Democrats, triggering the shutdown.

Butler County’s other congressman, 4th District Republican freshman Rep. Scott Perry, is also an active colonel in the Pennsylvania Army National Guard and a veteran of Operation Desert Storm. Perry’s home page, www.perry.house.gov, reflects his commitment as a soldier and a member of the House Homeland Security Committee — positions which, by necessity, refuse to acknowledge a government shutdown.

Perry’s home page links to his statement that the Obama administration already has missed half of Obamacare’s legally imposed deadlines, according to the non-partisan Congressional Research Service, and the president has already signed seven bills repealing or defunding parts of the law.

“Rather than comparing Republicans to suicide bombers, as one of his senior advisers did this week, Obama and Senate Democrats should work in good faith with the House to delay a law that is clearly not ready for implementation,” Perry said in his online statement.

Each of Butler County’s four elected officials in Washington has a different view of the shutdown crisis, reflective of their own experiences, priorities and party affiliation.

Which of them is right? That’s up to all of us to decide, since we elected them — and unfortunately, a shutdown appears to make them much more removed from their constituencies.