Cooperation is far from easy in the furious tribalism of Westminster.
Welsh Labour and Plaid exceeded expectations in the election - will the Conservatives ever be able to catch up?
Rolling coverage of the general election results from expert academics.
She faced criticism for not taking part in the BBC head-to-head, but the PM would have struggled had she done another late U-turn.
Leanne Wood: socialist, republican, feminist – and the woman who is changing the face of Welsh politics.
Things really didn't go as expected – and the pressure is on.
All eyes were on the race for second place in the 2016 Welsh Assembly elections.
Plaid did not fare as well as its Scottish cousin in the general election - and history can tell us why.
Experts provide a rolling response, live as the results come in for the 2015 general election.
Politicians promising to expand free childcare is no bad thing, but it is difficult to deliver in practice
Both Labour and the Conservatives could do deals with smaller parties to survive in a minority government. Here's how it works.
Plaid Cymru doesn't have much detail to offer when it comes to defence.
Our immigration expert evaluates the manifestos of 16 political parties, to see how their policies on immigration stack up.
Civil servants are left out of manifesto writing, and we're all worse off for it.
The SNP, Plaid Cymru and UKIP are the new faces in the UK election in 2015 but they reflect a wider change.
Plaid Cymru's Leanne Wood has questioned whether the UK should spent 6% of its budget on defence. Has she got her numbers right?
Our experts check if Plaid Cyrmu's policies measure up.
Smaller party leaders could push for a more generous approach if called upon to support a Labour government.
Regulators, rebates and retaining bus services - Plaid's transport policy offers a lot, but little explanation on how to fund it.
Plaid looks left as energy manifesto fuels talk of a Green-SNP alliance.