LOS ANGELES, July 27 (Reuters) - Dozens of former Republican and Democratic officials announced on Wednesday a new national political third party to appeal to millions of voters they say are dismayed with what they see as America's dysfunctional two-party system.

The new party, called Forward and whose creation was first reported by Reuters, will initially be co-chaired by former Democratic presidential candidate Andrew Yang and Christine Todd Whitman, the former Republican governor of New Jersey. They hope the party will become a viable alternative to the Republican and Democratic parties that dominate U.S. politics, founding members told Reuters.

Party leaders will hold a series of events in two dozen cities this autumn to roll out its platform and attract support. They will host an official launch in Houston on Sept. 24 and the party's first national convention in a major U.S. city next summer.

The new party is being formed by a merger of three political groups that have emerged in recent years as a reaction to America's increasingly polarized and gridlocked political system. The leaders cited a Gallup poll last year showing a record two-thirds of Americans believe a third party is needed.

The merger involves the Renew America Movement, formed in 2021 by dozens of former officials in the Republican administrations of Ronald Reagan, George H.W. Bush, George W. Bush and Donald Trump; the Forward Party, founded by Yang, who left the Democratic Party in 2021 and became an independent; and the Serve America Movement, a group of Democrats, Republicans and independents whose executive director is former Republican congressman David Jolly.

Two pillars of the new party's platform are to "reinvigorate a fair, flourishing economy" and to "give Americans more choices in elections, more confidence in a government that works, and more say in our future."

The party, which is centrist, has no specific policies yet. It will say at its Thursday launch: "How will we solve the big issues facing America? Not Left. Not Right. Forward."

Historically, third parties have failed to thrive in America's two-party system. Occasionally they can impact a presidential election. Analysts say the Green Party's Ralph Nader siphoned off enough votes from Democratic presidential candidate Al Gore in 2000 to help Republican George W. Bush win the White House.

It is unclear how the new Forward party might impact either party's electoral prospects in such a deeply polarized country. Political analysts are skeptical it can succeed.

Public reaction on Twitter was swift. Many Democrats on the social media platform expressed fear that the new party will siphon more votes away from Democrats, rather than Republicans, and end up helping Republicans in close races.

Forward aims to gain party registration and ballot access in 30 states by the end of 2023 and in all 50 states by late 2024, in time for the 2024 presidential and congressional elections. It aims to field candidates for local races, such as school boards and city councils, in state houses, the U.S. Congress and all the way up to the presidency.