The public rightly expects political leaders have integrity, be honest and transparent. Yet all politicians are human and some will lie or have lied in the past. Some of those lies will be much more significant than others. Some untruths will be current and some historical found out by investigative reporting. Some lies/untruths/embellishments will be inadvertent and some intentional. Those differences matter.
The press will always be on the hunt to uncover such things tof political leaders and their senior colleagues- its makes good copy and influences public opinion.
A political leader, or senior party member, lying on a CV, or lying on any other matter, makes me question that person- not the party in the first instance. I would consider the degree and extent of the lie/s, inadvertent or intentional and how far short have they fallen below the standards of integrity we should expect.
However, being human I do compare the numbers and extent of reported incidents across the parties. Is there one party worse than any of the others for example.
For example Reform has Farage (current £5million furore as just one example), Tice (alleged to have underpaid or avoided tax between (£100,000-600,000) and Zahawi (had to pay £5million to HMRC for unpaid tax PLUS an addition penalty, when chancellor of the exchequer and had to stand down- he also never made public what the penalty was for, or how much or the HMRC investigation outcome) Suella Braverman broke the ministerial code by using her own personal email address etc.
Those figures far exceed anything Ive seen ever reported for other parties. Eg Farage £5 million form Harbrone v Boris £1million from Harborne. Reform current leader's figures appear to far outweigh unpaid council tax, embellishment on a CV or Rayner's, seemingly inadvertent, £40k underpaid tax on a house sale contained within a complicated trust /second home purchase.
Being older, in politics for longer, having more contacts etc etc would lead me to expect that politician to be even more honest and transparent in their dealings, not less. They've been around the block more, have seen their peers "cop it in the press" also. Indeed they may have commented on those copping it, i.e. saying they deserve it and must go/people shouldn't trust that party. When they are found out the same rules apply.