What's the biggest block to the Republicans reconnecting with the US electorate? According to Bill Scher on the Huffington Post it's their "secular problem".
In the 2006 midterms the Democrats crushed Republicans among secular voters, broadly defined as those who attend church seldom (favoring Democrats 60% to 38%) or never (67% to 30%). Republicans retained strong support among those who attend church more than weekly. But among those who only go weekly -- the larger portion of the religious vote -- the Republican lead shrunk from 15 points to 7.
"Republicans failed to be competitive among secular voters, while Democrats were at least competitive among regular churchgoers. And since the secular vote is roughly equal to the regular churchgoing vote, according to the last several national election exit polls, that means Republicans and their conservative base have a far bigger secular problem than their rivals have a religion problem."
And a possible solution:
"One symbolic act that might be useful would be to have some conservative politicians come out of the closet and announce they are atheists or agnostics. If it was clear that conservatism fully embraced religious diversity, including those who do not worship God, that would allay concerns that conservatism is about installing a soft theocracy."
Speaking from this side of the Atlantic it would also help if some Democrats demonstrated a bit more back bone and "outed" themselves as non-religious instead of pandering to anti-atheist prejudice. The Secular Coalition for America is about to announce the results in a contest to find the highest elected atheist/humanist/freethinker in the US...an interesting exercise but also a very depressing one which might find that although the non-religious make up close to 20% of US voters they constitute exactly 0% of elected officials in Congress or the Senate.