It added that a number of these votes were subject to the UUP three-line whip.
Mr Pritchard told BBC Radio 4's Today programme he was willing to defy a three-line whip if necessary.
BBC: EU referendum: MPs told to vote against Monday's motion
He urged the government to downgrade the orders to a one-line whip.
He added that the issue was a "matter of principle" and that it was therefore "wholly wrong" for the government to introduce a three-line whip.
House Speaker John Boehner and his lieutenants were working to whip Republicans into line behind their plan to cut the budget while raising the debt limit.
Prominent Conservative backbencher John Redwood said there was no need for a three-line whip because Labour and Lib Dem MPs were going to vote against the motion.
Mr Hague has said he will impose a three-line whip requiring Tories to vote against ratification of the European Union's Amsterdam treaty, which Tony Blair signed last June.
People don't necessarily write their election address in the same way - you don't necessarily mention particular issues. and there is no three-line whip on what you do and don't say.
The prime minister believes now is not the right time for a referendum, and government sources have said it is likely to impose a three-line whip, insisting that Tory backbenchers support its position.
Plaid's Dafydd Elis Thomas is staying away, defying his party's three line whip, sharing "full and frank exchanges" with his group and expecting the sanctions and the trouble that has been a long time coming.
If Ms Rousseff does manage to whip Congress back into line using a mix of threats, promises and appeals to self-interest, her reward could be cleaner politics.
The whip counts votes and the whip puts pressure on people and holds them in line so that you get a solid party vote.
In 1999, Mr Weir lost the party whip at the assembly for refusing to toe the party line.
Yet it is one thing for the commission to crack the whip on the smalls (earlier this year Belgium fell into line).
The bottom line is that this is not a matter for the chief whip.
And one of the criticisms that's been raised is maybe he didn't crack the whip early enough or didn't really kind of heave it over the finish line himself earlier.
WHITEHOUSE: Press Briefing by Deputy Press Secretary Bill Burton
The set now back under his control, Murray closed it out with another break as he fired one brilliant winner down the line from deep behind the baseline, before racing in to collect a drop shot and whip a cross-court forehand past Federer on set point.
BBC: Andy Murray beats Roger Federer to win Shanghai Masters
But Rep. Jim Clyburn, the House Democratic whip, said the vote shows Republicans need to resort to "intimidation" to keep their caucus in line.
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