Sen. Claire McCaskill (D-Mo.) on Tuesday said her use of Twitter has become more infrequent because she is dedicating time to reading the 2,074 page Senate healthcare bill.

McCaskill has promised to read the bill by the time the amendment process begins after the Thanksgiving recess. She tweeted:

Sorry about being AWOL from twitter for a few days. I've been reading the bill among other things.

The Missouri senator took an characteristic five day hiatus from Twitter. McCaskill is known as one of the most prolific and widely read Twitter users in Congress. She often uses her account to communicate with constituents and tweet personal as well as political messages.

Before she said she would read the final Senate bill, McCaskill also took time to digest the Senate Health, Education, Labor and Pensions (HELP) Committee health bill in August.

Asked if she was perusing the legislation in response to GOP calls to read the bill, McCaskill's spokeswoman Maria Speiser told The Hill on Saturday that the senator was doing it to fulfill a promise to her constituents.