House Republicans on Monday released their proposal for a second batch of tax cuts after the first round passed in December.

The House Ways and Means Committee proposed three pieces of legislation containing several changes, including making permanent the temporarily low individual tax rates of last year’s cuts, canceling the maximum age limit for some retirement account contributions, and providing more tax assistance for new businesses. They would also keep an increased child tax credit and a close to $22 million estate tax exemption for couples, which was doubled in the first round of cuts last year.

The GOP hopes “Tax Reform 2.0” will boost voters’ economic optimism before the November 6 midterm congressional elections, where many House Republicans are facing uphill battles.

“It’s time to change the culture in Washington where we only do tax reform once a generation,” read a statement by House Ways and Means Chairman Kevin Brady. “This legislation is our commitment to the American worker to ensure our tax code remains the most competitive in the world.”

“Anytime we’re talking about tax cuts and the growing economy, we’re winning,” said Matt Gorman, spokesman for the National Republican Congressional Committee.

Democrats opposed last year’s tax cuts, criticizing them as benefiting only the wealthy and corporations.

Republicans may be hard-pressed to lock down the 216 votes necessary to pass the cuts in the House and will face even more difficulty in the Senate given the deep cut the proposals will make in the deficit, analysts predict.

Critics cautioned that keeping the individual rates low will not lift the economy as much as lowering the corporate rate and other proposals aimed at businesses did last year.