Sen. Chris Murphy (D-Conn.) has lost six pounds, but in an unconventional way.

The freshmen senator has been on the food stamp challenge, where he lives on $4.80 a day.

The lawmaker has been tweeting about it, writing about his weight loss on Friday morning.

Living this wk on $4.80/day food budget. Got on scale this morning - lost 6 lbs in 4 days. #foodstampchallenge

— Chris Murphy (@ChrisMurphyCT) May 24, 2013

Murphy is taking part of the weeklong SNAP (Supplemental Nutrition Assistance Program) Challenge, which encourages participants to live like millions of low-income Americans live, on an average of $4 a day.

House Oversight Committee Chairman Darrell Issa baited the White House into a Twitter fight Thursday afternoon ahead of a scheduled vote to repeal the president's signature healthcare law.

The California Republican urged supporters to use the hashtag "#ObamaCareInThreeWords" to describe how they felt about the Affordable Care Act.

Hey folks, #ObamaCareInThreeWords -- go!

— Darrell Issa (@DarrellIssa) May 16, 2013

Republicans and Democrats clashed on Twitter over President Obama’s healthcare law ahead of a House repeal vote.

"It's BS and Holder should be fired," tweeted Press of the DOJ's seizure of journalists' phone records.

Sen. John McCain (R-Ariz.) tweeted his excitement about the return of Fox action drama series '24.'

Jack Bauer is back to save America as we know it - can't wait! latimes.com/entertainment/…

— John McCain (@SenJohnMcCain) May 15, 2013

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Sen. David Vitter (R-La.) asked his Twitter followers to send pictures of locations offering free cellphones in Louisiana.

I'm collecting photos of #freecellphones booths around #Louisiana. If you see one, take a picture and send to me at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

— David Vitter (@DavidVitter) May 15, 2013

First lady Michelle Obama on Sunday tweeted a personal Mother’s Day greeting to the nation's moms.

Happy Mother's Day to my amazing mom & to mothers around the country that are encouraging their kids to dream big. -mo

— FLOTUS (@FLOTUS) May 12, 2013

A new Heritage Foundation study on immigration reform legislation ignored the economic benefits, Sen. Jeff Flake (R-Ariz.), one of the primary backers of the proposal, argued on Monday.

Here we go again. New Heritage study claims huge cost for Immigration Reform. Ignores economic benefits. No dynamic scoring.

— Jeff Flake (@JeffFlake) May 6, 2013 Read more...

The White House's official Twitter feed is celebrating Star Wars Day on Saturday, posting a picture of President Obama playing with a toy lightsaber.

Happy Star Wars Day! flic.kr/p/75XWNy #maythefourthbewithyou (We're still not building a Death Star: wh.gov/Ptti)

— The White House (@whitehouse) May 4, 2013

May 4 has been adopted by fans of the science fiction franchise because "May the Fourth Be With You" sounds similar to the "May the Force Be With You" catchphrase from the movies.