Given the wave-making nature of the ComRes poll earlier, it's worth pointing out the YouGov poll for tomorrow's Sunday Times. Rather than a eye-catching increase in Lib Dem support, it records a 2 point fall for Clegg, Cable et al. Here are the headline numbers:
Conservatives --- 44 percent (up 1 percentage point)
Over at Political Betting, Mike Smithson indicates that the difference may be down to polling methods, online vs telephone. I guess we'll have to wait for more polls to know either way.