Biden's approval rate just surpassed Trump's, again... sign of a blue wave?

Article states it well:

When the election looked to be primarily a referendum on the performance of the Democrats who control the White House and Congress, Republicans were optimistic that a towering "red wave" would carry them to sweeping gains in November.

But with evidence suggesting more voters are treating the election as a comparative choice between the two parties, operatives on both sides are bracing for a closely contested outcome that could include an unusual divergence in results for the House and those in Senate and governor races.