The level of public "despair" about MPs' expenses means political leaders "have to try and see" if they can bring in further reforms to the system, Nick Clegg has told ITV News.
The Liberal Democrat leader said he was "always prepared" for cross-party discussions on the issue.
However, he also stressed "the important thing" is that new rules brought in under this government mean MPs' claims are now assessed by an independent body, rather than a committee of fellow MPs.
Over half the public (53%) think Maria Miller's behaviour in relation to her expenses is "typical of most or all MPs", a new ITV News/ComRes poll has found.
The survey of 1,000 adults also found the controversy had made 49% of people trust politicians less.
Almost two thirds of the public think David Cameron handled the Maria Miller expenses row badly, according to a new ITV News/ComRes poll.
Some 63% of those polled said the Prime Minister had performed "badly", with 32% saying he had handled the the controversy "very badly".
Just 8% of respondents said they thought Mr Cameron had dealt with it well.
ComRes polled 1,000 members of the public today.
Culture Secretary Maria Miller has been ordered to repay £5,800 of expenses and make a public apology.
The decision follows a parliamentary investigation into how the Tory minister used her second home allowance.
The cross-party found Mrs Miller had overclaimed interest payments on her mortgage in 2008/09.
A union leader said it was "disgraceful" that MPs were claiming expenses for heating their second homes while families were struggling to pay energy bills.
Dave Prentis, General Secretary of Unison, told the Sunday Mirror:
International Development Minister Alan Duncan claimed £2,750 for electricity bills and £1,250 in heating oil for his home in Rutland, Leicestershire, the Sunday Mirror reported.
Universities Minister David Willetts claimed £2,596, while Conservative MP Nadhim Zahawi claimed £5,822, the paper said.
Bills costing more than £1,000 were submitted by 41 MPs while 78 made claims for £500 in the 12 months up to March this year, the paper's analysis found.
A Labour MP said ministers found to have claimed thousands in expenses to heat their second homes should "perhaps wear thicker jumpers".
John Mann, who did not claim for his energy bills, told the Sunday Mirror:
David Cameron suggested earlier this month that people facing rising energy bills should consider "wrapping up warm" and wearing jumpers.
MPs have come under attack for claiming £200,000 of taxpayers' money to cover the cost of their energy bills.
Some 340 MPs, including Government ministers, have used the parliamentary expenses system to recoup the cost of heating their second homes, according to the Sunday Mirror.
Conservative MP Nadhim Zahawi claimed the most with a bill totalling £5,822.27 to cover electricity and heating oil for his estate in Warwickshire.
The claims do not break any parliamentary rules but come at a time of heightened tensions over the spiralling cost of gas and electricity.
The Independent Parliamentary Standards Authority (Ipsa) has announced 70 politicians have agreed to repay profits from taxpayer-funded homes.
The sums range from a few hundred pounds in some cases to the £81,446 paid by the Welsh Secretary David Jones and the £61,403 returned by DUP East Londonderry MP Gregory Campbell - both for properties in London.
Conservative MP Stewart Jackson has said he is resisting legal action from Ipsa to recover the sums it says he owes, and is mounting his own legal challenge to the watchdog's claim his family home increased in value by 20% at a time when he says house prices in the area were falling.
"Ipsa's legal proceedings are heavy-handed and disproportionate and are clearly intended to bully me into submission.
"The essence of the dispute is my challenge of the valuations of 2010 and 2012.
"Ipsa are seeking a cash sum on a so-called capital gain 'profit' on my family home, in which I live and have not sold.
"The money which Ipsa is demanding retrospectively is more than the total amount I received when I was claiming mortgage interest and the property is now valued at less than we purchased it for in 2005.
"At my own expense, I have paid for an accurate recent expert valuation and I have made a reasonable offer to Ipsa to settle the matter and reduce the legal costs which will have to be met by the taxpayer."